For a 5k, treat peanuts as a protein-containing snack rather than your only pre-run fuel. University College London Hospitals NHS Foundation Trust advises that a snack eaten 60–90 minutes before exercise should include carbohydrate and protein with minimal fat, so pair a modest portion of peanuts or peanut butter with a carbohydrate food you tolerate. Choose an unsalted product if keeping salt down matters to you.
Peanuts are an option when you want a portable snack, but their protein content alone does not tell you whether they suit the time before your run. Check the serving size and what else you plan to eat.
If you prefer a lower-salt savoury snack, check the particular product rather than assuming all peanuts are alike. Tesco Groceries lists less than 0.01g salt per 30g of KP Unsalted Peanuts, compared with 0.36g for a 30g KP salted snack pack and 0.48g for 30g of KP Dry Roasted Peanuts.
If you eat 60–90 minutes before exercise, consider a modest serving of peanuts or peanut butter alongside a carbohydrate food you already tolerate. University College London Hospitals NHS Foundation Trust advises carbohydrate and protein with minimal fat for a snack at that point.
Start with when you will eat, then compare the portion, salt and allergen information on the product you intend to buy.
| Priority | What to check | Your needs |
|---|---|---|
| Pre-run timing | Check how long you have before the run, whether the snack includes carbohydrate and how much peanut product you will use. University College London Hospitals NHS Foundation Trust advises carbohydrate and protein with minimal fat for a snack 60–90 minutes before exercise. | If I need a snack before setting off, I want something I can pair with a carbohydrate food I already tolerate, rather than relying on nuts alone. |
| Protein per portion | Compare the amount you will actually eat, not just values per 100g. Tesco Groceries lists 9.0g protein per 30g of KP Unsalted Peanuts and 28.2g per 100g of Tesco Unsalted Roasted Monkey Nuts. | For a snack before or after a run, I want to know what my usual portion provides. |
| Salt and seasoning | Read salt per serving on the current label. Tesco Groceries lists less than 0.01g per 30g of KP Unsalted Peanuts, 0.36g per 30g salted snack pack and 0.48g per 30g of KP Dry Roasted Peanuts. | When I have peanuts regularly, I would rather choose a product whose salt level fits my preferences than assume every flavour has the same amount. |
| Allergens | Read the ingredients and allergen information on the physical pack each time. Cambridge University Hospitals NHS Foundation Trust notes that recipes can change without warning. | If I am buying for someone with an allergy, I need to check that specific pack and follow their clinical advice, not rely on an earlier purchase. |
Protein is only one part of the pre-run snack decision. University College London Hospitals NHS Foundation Trust advises carbohydrate and protein with minimal fat for a snack eaten 60–90 minutes before exercise.
If you need a snack at that time, keep the peanut portion modest and add a carbohydrate food you have already tolerated during training.
Tesco Groceries lists 9.0g protein per 30g for each of the compared KP unsalted, salted snack-pack and dry-roasted products, but their salt values range from less than 0.01g to 0.48g per serving.
Compare salt using the same serving size on the current labels, particularly if reducing salt is a priority for you.
A familiar product can have changed ingredients or allergen information. Cambridge University Hospitals NHS Foundation Trust advises reading the label each time a product is purchased.
Check the physical pack before buying or eating it. Anyone with diagnosed allergy or medically advised avoidance should follow their clinical advice rather than trial the product.
These examples illustrate product formats and label differences; a brand name alone does not establish the nutrition of every product it sells.
KP has unsalted, salted snack-pack and dry-roasted peanut products in the compared Tesco Groceries listings.
Tesco Unsalted Roasted Monkey Nuts are an in-shell option for someone planning a peanut snack.
M&S 100% Crunchy Peanut Butter offers a spreadable format to use with a carbohydrate food.
These options include unsalted peanuts, smooth peanut butters and a garlic-flavoured peanut snack. Choose by when you plan to eat them, then check the current nutrition and allergen labels for the particular product.
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An unsalted whole-peanut option for a planned snack. If you eat it before a 5k, consider a modest portion alongside a carbohydrate food you tolerate; check the pack for its serving values and allergens.
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The smooth format can be spread on a carbohydrate food for a planned pre-run snack. Check the portion you will use, along with the current ingredients and allergen information.
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This smooth peanut butter comes in a 1kg pack and can be used with a carbohydrate food. For a snack before running, decide on the portion and timing using foods you already tolerate.
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A smooth, spreadable option to consider with a carbohydrate food. Compare its current salt value, portion size and allergen information with other peanut butters before choosing.
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A garlic-flavoured peanut snack rather than an unsalted option. Check its salt per serving and ingredients if you are comparing it with plain peanuts for regular snacking.
If you need a pre-run snack, do not choose peanuts solely for their protein content. University College London Hospitals NHS Foundation Trust advises carbohydrate and protein with minimal fat for a snack 60–90 minutes before exercise; consider a modest peanut portion alongside a carbohydrate food you have tolerated before.
Choose unsalted when keeping salt down is your priority, but compare the actual labels. Tesco Groceries lists less than 0.01g salt per 30g of KP Unsalted Peanuts, against 0.36g in a 30g KP salted snack pack and 0.48g per 30g of KP Dry Roasted Peanuts.
Peanut butter can be spread on toast or another carbohydrate food you tolerate. If eating 60–90 minutes before exercise, consider the amount you use: University College London Hospitals NHS Foundation Trust advises that a snack at that point should include carbohydrate and protein with minimal fat.
Read the ingredients and allergen information on the physical pack every time you buy it. Cambridge University Hospitals NHS Foundation Trust notes that recipes can change without warning; anyone with a diagnosed allergy or medically advised avoidance should follow their clinical advice rather than trial a product.