10 Best Sources of Potassium Reviewed


Potassium is one of the top ten most common elements in the human body, helping to fuel many different levels of our everyday functions. From vascular systems to electrolyte balance and everything in between, potassium is an essential nutrient for any runner looking to improve their diet.

Low-potassium intake can make us vulnerable to things like hypertension and hypokalemia, as well as put us at higher risk for strokes. Despite this, most Americans don’t get enough potassium, only consuming about half of the recommended 4700mg in a day. The truth is, a good portion of runners probably also fall into that category and could use a change of focus when it comes to dietary needs.

Luckily, there are plenty of easy to find foods you can stock up on that are rich in potassium and taste great that will get you back on track–figuratively and literally! We’ve compiled a list of these best sources of potassium just for you, along with the reasons we’ve included them, helpful advice, and FAQs so you can get the most out of your meals.

Last Updated: June 17, 2018
By Max Knapp:

While the options on our list haven't changed much, we did go back and add a little more information on this subject. Make sure to also take a look at our new FAQ section, located near the bottom. 06/17/18 Although the options on this page are largely the same, we did review our criteria and make some changes for clarity and accuracy. We've also added more relevant and helpful links so that you can find everything you're looking for.

Sweet Potato
  • Sweet Potato
  • 5 out of 5
    Our rating
  • 950mg of Potassium Per Cup
  • Price: See Here
  • Avocado
  • 4.8 out of 5
    Our rating
  • 690mg of Potassium
  • Price: See Here
  • Banana
  • 4.6 out of 5
    Our rating
  • 422mg of Potassium
  • Price: See Here

10 Best Sources of Potassium


Sweet Potato

Sweet Potatoes are a particularly good “running” food. With plenty of energy metabolizing B vitamins potassium and complex carbohydrates, they are a great addition to any dinner. Ditch the spaghetti and have a couple sweet potatoes.
Expand to see more
Nutritional Content
A great source of vitamin A and B vitamins, the 950 mg of potassium per cup is almost just a nice bonus. Another great energy providing food that may lead you to ditch your granola bars in favor of whole foods.

Taste and Practicality
They are called sweet potatoes for a reason. The best of both sweet and potato worlds they can be made into fries, put in a stir fry or just eaten whole. They are easy to prepare and taste great.

A bit pricier then other varieties of potatoes, they also contain many nutrients that make the price difference reasonable. If you are on a tight budget though consider russet potatoes as an alternative.
  • Contain many hard to find nutrients
  • Complex flavors with many ways to prepare them
  • Require preparation
  • not as practical as an on the go option


An excellent source of healthy fat and many nutrients, avocados are like high octane fuel for distance runners.
Expand to see more
Nutrient Content
Avocados are full of monounsaturated fat which help you feel satisfied and provide lasting energy. They also offer an impressive 690mg of potassium.

Avocados are easily eaten by themselves. Eat them with eggs in the morning or enjoy them alone with a pinch of salt. They also go great with most other foods, so you can throw them on sandwiches or salads.

Cost or Value
A bit pricy, avocados are still a great value because of their nutrient density and great flavor.
  • Taste great
  • Highest source of potassium on this list
  • Full of healthy monounsaturated fat
  • It takes a bit of experience to know when avocados are ready to eat
  • Pricey


No list of potassium rich foods is complete without bananas. The classic “runner's food” bananas are nature’s energy bars.
Expand to see more
Nutritional content
Just one banana has 422mg of potassium. It is an excellent source of quickly digesting carbohydrates that will give you the energy you need to train.

Taste and Practicality
Nothing is more practical than a banana. Throw one in your gym bag and enjoy the sweet wholesome taste instead of the candy bar you have been taking to work

Sometimes referred to as the "poor man’s fruit", bananas are an unbeatable value
  • Great source of potassium
  • Extremely practical and inexpensive
  • Provides plenty of healthy energy
  • Spoil quickly


Salmon is one of the richest foods on this list, packed with great flavor. It is also the best source of protein discussed and is full of some of the hardest to find nutrients like omega 3.
Expand to see more
Nutrient Content
Just half of one filet provides 485mg of potassium. Salmon is also one of the best sources of protein and one of the only ways to get essential omega 3 fatty acids in your diet.

Obviously you can’t throw a filet of salmon in your bag as easily as a banana, but including salmon in your diet is a great way to get plenty of hard to find nutrients. It's also easy to pair with plenty of diverse sides.

Cost or Value
Salmon isn’t the cheapest food that you will find but it is certainly one of the healthiest.
  • Delicious!
  • Great source of protein and essential fatty acids
  • A bit pricy
  • Requires a bit of knowledge to cook 


Popeye’s favorite, it is hard to go wrong with dark leafy greens. Well known for their iron content, spinach is also a great way to get more potassium.
Expand to see more
Nutritional Content
With 465mg of potassium and many other vitamins and minerals, spinach is a low calorie food that has a place in everyone’s diet.

Not everyone will like spinach but throw it in a smoothie with some banana and you will forget it is there and still get the benefit of the added minerals and phytochemicals.

Cost or Value
Buying an extra bag of spinach every week isn’t going to send anyone to the poor house and is extremely nutrient dense.
  • Many ways to include it in your diet
  • Excellent source of just about everything
  • Make sure to buy fresh Spinach, it can go south pretty quickly


Beets are a runner’s best friend. Besides being a great source of potassium, recent studies have shown that they have the potential to directly improve performance in endurance racing events.
Expand to see more
Nutritional content
One cup of beets is 442mg of potassium is nice but the beets real advantage for runners are the presence of nitrates which improve blood flow in the body and can directly improve cardiovascular endurance. Consider adding beets to your pre-race meal.

Taste and Practicality
Beets can be a bit of a mess in the kitchen, but they're versatile. They can even be microwaved!

Not the cheapest food on this list, but if the nitrate performance enhancing benefits beets offer is worth it to you, then they are worth trying.
  • Strong evidence supports idea that nitrates in beets improve cardiovascular endurance
  • Unique flavor profile with many recipe possibilities
  • Can be very messy to prepare
  • Will turn your urine red (Consider yourself warned!)

Skim Milk

All milk has potassium but low fat milk is more nutrient dense then regular milk, or in other words it gives you more potassium per calorie.
Expand to see more
Nutritional content
One cup of skim milk has 382mg of potassium. It also contains calcium and plenty of protein.

Taste and Practicality
There’s a reason milk is a basic grocery staple that disappears when blizzards roll into town. It is an extremely practical and basic food that is extremely practical. Some may complain about the taste of skim milk higher fat milks are also good sources of potassium.

Also available on Amazon, milk is inexpensive and easy to get a hold of.
  • Zero preparation or cooking knowledge needed
  • Individuals with lactose intolerance can’t drink it
  • May cause GI distress if consumed right before exercise


Broccoli is one of the healthiest, most nutrient dense foods you can include in your diet. With a little know how and patience in the kitchen, it can also be an enjoyable addition to any meal.
Expand to see more
Nutritional content
288mg of potassium per cup is nothing to scoff at, but remember broccoli is also a great source of vitamin c, fiber, and many b vitamins that are important for energy metabolism.

Taste and Practicality
When eaten raw, broccoli isn’t very palatable and is very bitter, but when it is properly cooked or included in a stir fry, it can be delicious. It does require more preparation then a banana, but it is one of the most nutrient dense foods on the planet.

Brocolli is very inexpensive and like everything on this list, you can even order it on Amazon and have it shipped directly to you.

Very low in calories and high in many important nutrients


Broccoli requires some cooking experience in order to prepare properly

Greek Yogurt

Greek Yogurt is a surprising source of potassium that is easy to include in your diet. Although it doesn’t have the most potassium, it is extremely versatile and is also a great source of protein.
Expand to see more
Nutritional content
With 240 mg of potassium and 17 grams of protein, Greek Yogurt isn’t the most potassium rich food on this list, but it is the only one that has probiotics which support digestive health.

Taste and Practicality
Greek Yogurt requires no preparation and and is very easily digested by your body. It is a great option for runners who want to include it in their smoothie before their morning run. Some people may not like the taste but to others it can be as enjoyable as eating ice cream!

Although more expensive than regular yogurt, Greek Yogurt is a very nutrient dense and practical way to get more potassium in your diet.
  • No preparation is needed
  • Tastes great
  • Includes probiotics
  • Not the highest source of potassium


Kale is spinach’s tougher more serious big brother with more potassium and a slightly more bitter taste.
Expand to see more
Nutrient Content
One cup of kale has 79mg of potassium and a much better source of calcium then spinach. There is a reason kale has become such a trendy health food.

Just like Spinach, kale can be eaten raw cooked or in a smoothie. It is easy to include in your diet and shouldn’t be overlooked.

Cost or Value
Kale is an excellent cost efficient source of many different nutrients including potassium.
  • The calcium in kale is more readily absorbed then calcium from other sources
  • Easy to find and prepare
  • Bitter taste when eaten raw


Our Criteria and Rank for the Best Sources of Potassium for Runners

These foods are rated based on their potassium content and how practical they are to incorporate into your diet. Keep in mind that high potassium diets are not for everyone and you should consult with a dietitian or a doctor before making any drastic changes in your diet.
No matter what foods you choose to include in your diet, be sure to include a variety of foods. Potassium is important for everyone’s health and not just runners, and there are many more sources that are not on this list. Just remember, if it grew out of the ground and is not packaged or processed, then it will have potassium.
Potassium is key to a healthy diet as well and absolutely imperative to maintaining a properly functioning body. Without potassium, our muscles become easily fatigued, our hearts won’t regulate our blood pressure as well, and our nervous system doesn’t recover as easily. Most of our body’s potassium is stored in our cells and is critical to how they function. The fastest and best way to replenish potassium stores and maintain a healthy balance in our bodies is through a well balanced diet full of foods like the ones included on our list. Keep in mind that high potassium diets are not for everyone and you should consult with a dietitian or a doctor before making any drastic changes in your diet.

Nutritional Content

The primary focus of the foods on the list was the amount of potassium each one contained compared to their nutritional value. To be considered an “excellent source” of potassium the food itself must meet at least 20% of your daily potassium needs. In comparison, for a food to be considered an “excellent source” of nutrients the food must meet 10 to 15% percent of your daily value nutritional needs. Each of the foods on the list is at least considered a “good source” of potassium, while some of them meet the 20% value set by DV per RACC standards (Daily Value per Reference Amount Customarily Consumed standards). Knowing how to read your food labels can help you better understand what you’re eating and if you’re getting adequate nutrients.

Aside from just being an adequate source of potassium, we wanted to take into consideration that the nutritional content of the foods on our list should be beneficial for runners and athletes specifically. For example, some of the foods on our list like skim milk, salmon, and Greek yogurt are great sources of protein, which is central to muscle repair and recovery. You may have heard of getting a glass of chocolate milk (made with skim milk for potassium!) after a tough workout–this is because it has what is considered the “perfect ratio” of carbohydrates to protein which helps your muscle fibers recover and grow stronger, making you faster over time. As you gain more muscle your metabolism will burn more calories and if you’re an athlete you’re probably familiar with that nagging hunger that comes with tough training. Running miles and miles every day makes you HUNGRY! Plenty of protein in your diet will help keep some of that “runger” away. Another example of well rounded nutrition from our list is sweet potatoes, bananas, and avocados which are excellent sources for carbohydrates.

Other nutrients like fats can help with hormone functioning which can be important for runners who might be more prone to stress fractures or amenorrhea, for protecting the body’s internal organs, for fighting fatigue and poor mental functioning, and for stronger nails and shiny hair. Additional vitamins and minerals in leafy greens and animal products will help the body put the nutrients to good use and help with muscle contraction and relaxation. These can include iron, magnesium, calcium, sodium choride, and vitamins D, C, B, and E. Fiber is great for runners as well, with water soluble fiber in fruits and veggies like the ones on our list keeping cholesterol low and controlling blood-sugar levels (which is crucial in helping keep you from bonking out early on your run!). Insoluble fibers like the ones found in whole grains help with digestive health.

Taste and Practicality

As runners, we put our bodies and our minds through a lot. We trudge through difficult workouts, giving everything we have to push through barriers, reach new goals, and make new PRs. There are days when we don’t want to get out of bed to get our workout done before the sun up. So why in the world would you want to add another layer of sacrifice to a lifestyle that already pushes you far outside your comfort zones? Training to be a runner is hard, but eating to be one doesn’t have to be!Even when your dietary needs are specific, they don’t have to be limited, boring, or bland! This starts with making sure you are getting in the right amounts of macro and micro nutrients that your body needs to perform well while choosing options that taste good and will conveniently fit your schedule. Our list of foods packed with potassium exist on a taste spectrum.

Some of the sweeter options like bananas and Greek yogurt can work great as a snack, a sweet balance to your salty dish, or even as a dessert. Other foods that make the list can easily be sweetened up if that’s more your style — simply add a little chocolate syrup to your skim milk or a mix of cinnamon sugar to your sweet potatoes (and if you are really in a festive mood throw a couple of marshmallows on top).

Other foods that made our list are best served savory. Avocados have a deliciously creamy texture that pairs impeccably with a tortilla chip (or carrots for a healthier alternative) when diced up into guacamole. Kale and spinach can be thrown alongside just about anything to make a delicious salad, but also hold up well served on their own. Some of the foods on this list might make you want to automatically say “ew!” especially for children who might have a limited palette. However, before you judge a book by its cover, know that there are lots of cooking methods that can help change the taste of the foods for the better! Roasting broccoli and beets is an absolutely delicious option for the pickier eaters on your list.


Thinking about practicality includes thinking about how easily it can fit into your life and your schedule, and the variety of recipes and meals the food can be used in. Foods need to be convenient. They need to be easy to cook because you just do not have all evening to stand by the stove just to get a nutrient rich meal on the table for your family! Foods that do not even require any cooking time go even further, which makes some of the foods on our list a perfect option for any meal or snack. Most of them are ready to eat foods as soon as you take them home or get them out of the fridge. Some of the foods on our list might need some ripening time (we’re looking at you avocados and bananas) to get them to the perfect level of tastiness, which might hinder your desire to purchase them and not fit well into your needs. The good news in this case is that most grocery stores sell fruits and vegetables in a range of ripeness, and so whether you go to the store needing a banana to eat that afternoon or in a few days, you will likely be able to find one that meets your needs. Another convenience factor to consider is how easy they are to transport. Can you just throw them in your lunch box or gym bag or do they require special packaging or storage, refrigeration, or microwave time? Can you eat them quickly when you are on the go or do they require a little more prep time, utensils, etc.?

Overall Value

Obviously, the first thing to consider when weighing the overall value of a food is how cheap or expensive it is, relative to other similar foods. Most of the foods on our list are fairly cheap, though some might be a bit pricier depending on where you live and where you grocery shop. Bananas are known as the “poor man’s fruit” because of how economical they are – a whole pound will cost you just cents, so buying them can go a long way (though they do ripen and subsequently spoil rather quickly). Milk is also fairly reasonably priced and can often be found for under two dollars for a whole gallon. Depending on the season, sweet potatoes are also an economical purchase, especially because they have a longer than average shelf life for a vegetable. Avocados might be one of the pricier vegetables on the market, especially when they are not in season or if you live far away from a tropical or warm climate where they are grown, and thus incur the cost it takes to preserve and transport them before they go bad. But one of the plus sides of these fruits and veggies – regardless of price – is that if they DO seem to be nearing their expiration, they can easily be preserved in the freezer for a few months to weeks, and taken out and used in creative ways (blended frozen avocados and bananas make excellent ice cream substitutions and smoothie additions!). Salmon is by far the most expensive food on our list, and the price can get even higher when it is specially caught wild salmon from remote locations (versus farm raised salmon which is salmon that has been raised and cultivated specifically for consumption). However, the value of a food goes beyond just price.

Value is added to foods that can be prepared using a variety of cooking methods. Overall, you will end up getting more for your money if you can buy a couple bushels, packages, or servings of a food and have the option to bake them, roast or toast them, stew them, grill them, sauté them, or treat yourself to some pan or deep fried deliciousness for a special occasion! Variety is key to adding value, so the more meals and snack options a food can be used in, the better. Value is also added if a food is raised, caught, or grown in a particular way – think fresh, local, and even organically raised fruits and veggies. In some instances, this might raise the monetary price, but adds to the overall healthful value of the food.


Other Important Factors to Consider

Where You Live

Finding foods you and your family like that taste great and are affordable and convenient for your lifestyle is all fine and good until you realize you do not actually live in an area where you can easily purchase them, or that they are sold at all. When thinking about fruits and vegetables, you must consider how far away from the warmer and tropical climates that these foods are typically grown in. It certainly is not totally impossible (well, in most cases anyway) to get these foods but it will cost you – literally. You will end up paying much higher prices to cover the charge of shipping and transporting them so far away from their source while still ensuring they get to you in peak condition. This is especially true if it is not even their typical growing season, in which cause many fruits and vegetables really just aren’t sold or found in stores. Likewise, be careful about the quality of products you’re purchasing if you live far away from their source. For instance, if you are thousands of miles away from a coast, then you are probably safe and better off purchasing frozen salmon as opposed to “fresh”.

Photo by Nathan Cowley from Pexels
Potassium Deficiency

Potassium deficiency is a serious issue, especially for runners and athletes. More formally known as “hypokalemia,” potassium deficiency is often characterized by a lack of energy and general fatigue or weakness, muscle cramps, constipation, and an irregular heart beat. These symptoms are generally seen in those who have potassium levels around 3 – 3.5 mmol/L. It’s important to be aware of your potassium levels so that if you have a deficiency you are changing your diet with the help of your doctor to include potassium rich foods like the ones on our list, as well as choosing supplements that are right for you if necessary. It’s also important to be aware of you potassium levels so that if you have too much  potassium you’re not overloading on something your body doesn’t need!

Food Allergies

If you have a food allergy to any of the foods that are on our list, then its obvious you should avoid them. Specifically, you might be allergic to bananas or have what is known as pollen food syndrome, which has been known to be caused by bananas. Signs of pollen food syndrome include immediate swelling of the lips, throat, and mouth upon consuming some kinds of raw fruits and vegetables. This usually not life threatening, but should still be treated like an allergy. If you are unaware of any food allergies you might have, we encourage you to go get tested.

Special Diets

The foods on our list can all be classified as being apart of a healthy diet – all provide multiple nutritional benefits and can easily fit into most specialty diets, including Whole 30, the Paleo diet, ketogenic diets, etc. Most are fruits and vegetables, or animal sources, and fit well into a holistically health lifestyle. If you’re worried about getting adequate potassium in on one of these diets, don’t be!

Risk of Kidney Stones

The kidneys are the body’s main organ when it comes to controlling potassium levels in the blood, and serve to remove excess potassium through urinary excretion when levels get too high. However, potassium (specifically potassium citrate) plays a key role in helping break down deposits of calcium that build up in the kidneys, often leading to painful kidney stones. If you have a personal or family history of developing kidney stones, upping your potassium intake might help circulate out some of that excess calcium.


Q: What exactly is potassium?

A: Technically, potassium falls under two categories: it is both a mineral consumed through foods and an electrolyte produced within the body. Electrolytes are positively charged ions that help regulate several bodily functions including blood pressure, digestion, heart rate and normal heart functioning, muscle contractions, and functions of the nervous system. Other common electrolytes include sodium, chloride, magnesium, bicarbonate, and calcium. For athletes, electrolytes play a critical role in supplying oxygen to the blood, and thus to the muscles (which ultimately provides energy for the body to run, jump, lift weights, etc. off of).


Q: What is electrolyte imbalance?

A: An electrolyte imbalance is when one of the types of electrolytes present in the body’s blood cells are either too high or too low. When this happens, the individual may experience a number of symptoms, including an irregular heart beat, muscle weakness or general fatigue, notable changes in blood pressure, and problems within the nervous system

Q: What are some of the benefits of consuming potassium?

A: Potassium offers many health benefits. Some of these include stimulate cognitive and neural activity and increasing overall brain functioning and awareness, stabilizing blood sugar (which is especially important for those with diabetes), reducing muscle disorders and helping muscle contractions and reactions to quicken and become more efficient, enhancing bone health by helping the body’s absorption of calcium, aiding in protein synthesis which may ultimately build muscle and boost the metabolism, regulate water and fluid levels, and regulating hormones which ultimately may lead to decreased stress and anxiety.


Q: What are the runner ups? What other foods might be good sources of potassium?

A: Following a similar trend that already exists within our list, dark and leafy greens tend to be high in potassium so some other options not listed here are Swiss chard and Bok choy. Legumes are also excellent sources of potassium: Lima beans, soy beans, and pinto beans just to name a few. Regular potatoes are also known for their potassium levels.

Q: What are the standard serving sizes of these foods?

A: The standard serving sizes for the foods on our list can be found below:

Sweet Potatoes: 1 cup (180 calories)

Avocados: 1 cup (240 calories)

Salmon: 4 oz (160 calories)

Spinach: 1 cup (50 calories)

Beets: 1 cup (75 calories)

Banana: 1 medium (100 calories)

Skim Milk: 1 cup (80 calories)

Greek Yogurt: 6 ounces (130 calories)

Kale: 1 cup (36 calories)

Q: Can you have too MUCH potassium in your blood?

A: Yes. Having too much potassium in your blood is a condition known as hyperkalemia. This typically occurs when they kidneys, the main organ for regulating potassium levels, are not properly removing excess potassium out of the body. This is mostly caused by medications that have this effect on the kidneys, and include drugs like diuretics, some blood pressure medications, and antibiotics (in particular, penicillin). When potassium remains in the kidneys, the symptoms can be serious. The symptom of highest concern is a dangerous change in heart rhythm. If you experience symptoms of possible hyperkalemia due to complications with your medicine, stop use of the drug immediately and talk to your doctor.



Here are a bunch of sources that we used while we conducted our research:


  1. Dr. John P. Cunha, Low Potassium (Hypokalemia), Online Health Article, Sep 18, 2016
  2. The Mayo Clinic Staff, Low Potassium (Hypokalemia), The Mayo Clinic Health Article, Jul 04, 2017
  3. Dr. Rob Hicks, Low potassium (hypokalaemia), WebMD Health Article, Mar 16, 2016
  4. Dr. Charles Platkin, Food and Label Cheat Sheet (Part 2), Health and Wellness Informational Blog Artical, Aug 16, 2012
  5. U.S. Food and Drug Administration, Guidance for Industry: A Food Labeling Guide (10. Appendix B: Additional Requirements for Nutrient Content Claims), FDA Dietary Guidelines, Jan 01, 2013
  6. Nestle, The Athlete's Nutrition Needs, Nestle Nutrition Article, Sep 05, 2017
  7. Michelle Ulrich, How Athletes Can Choose the Best Dietary Fats, Active.com Nutrition Article,
  8. Sally Wadyka, Rough Stuff: How to get the benefits of fiber-rich foods without letting them , Runner's World Nutrition Article, Feb 01, 2005
  9. Authority Nutrition, Wild vs Farmed Salmon - Can Some Fish be Bad For You?, Online Nutrition Article, Sep 06, 2017
  10. Unkown, Hypokalemia, Healthline Online Health Article, Sep 05, 2017
  11. Dr. John Warner, Banana Allergy, Anaphylaxis Campaign Informational Article, Mar 01, 2015
  12. Healthwise Staff, Potassium Citrate for Kidney Stones, University of Michigan Health Article, Apr 28, 2011
  13. Christian Nordqvist, What are Electrolytes? What Causes Electrolyte Imbalance?, Medical News Today Health Article, May 24, 2016
  14. Unknown, Potassium, Healthline Nutrition Article, Sep 08, 2017
  15. Unknown, 13 Incredible Potassium Benefits, Organic Facts Nutrition Blog Post, Jun 01, 2011
  16. Unknown, The World's Healthiest Foods: Potassium, Informational Webpage Article,
  17. WebMD Authors, Hyperkalemia: Symptoms and Treatments, WebMD Article, Sep 09, 2017
Salomon XA Pro 3D
Next Giveaway draw
Your email is safe with us. Pinky swear
Enter the giveaway