Choose a cold brew for a 5k according to whether you want coffee alone or a drink that also contributes some carbohydrate. An unsweetened black cold brew is not a substitute for carbohydrate fuel; milk and oat lattes may provide some carbohydrate, but ‘no added sugar’ does not mean sugar-free. Check the serving’s nutrition, ingredients and caffeine information against what you plan to eat and drink.
If you want a chilled coffee before a 5k, separate that choice from any plan for carbohydrate. Tesco Groceries lists 2.4g carbohydrate in a prepared 200ml glass of its unsweetened concentrate, so that serving contributes little carbohydrate.
Black coffee, oat lattes and lactose-free milk drinks meet different requirements. A ‘no added sugar’ label can still accompany naturally occurring sugars; check the nutrition panel and ingredients for the particular drink.
A stated caffeine amount makes it easier to account for other caffeine you consume. If you prefer to avoid caffeine, a decaffeinated drink is a different choice from a cold brew whose caffeine amount you have not checked.
Decide what role the drink has in your 5k routine, then compare nutrition per portion and check caffeine and dietary fit.
| Priority | What to check | Your needs |
|---|---|---|
| Carbohydrate | Compare carbohydrate and energy per prepared serving or bottle. Tesco Groceries lists 2.4g carbohydrate and 12 kcal per prepared 200ml glass of its unsweetened concentrate; Sainsbury's lists 7g carbohydrate per 100ml for Rodd's Original Latte. | If I want coffee without relying on it for fuel, a low-carbohydrate black drink fits that plan. If I also want some carbohydrate, I need to check the amount in the portion I will actually drink. |
| Sugars | Read ‘of which sugars’ alongside any ‘no added sugar’ claim. Sainsbury's lists 4.8g sugars per 100ml for Rodd's no-added-sugar oat latte. | I want to distinguish a drink with no added sugar from one with 0g sugars, rather than choosing by the front label alone. |
| Caffeine | Look for milligrams per bottle or prepared serving, and consider caffeine from other drinks and supplements. Sainsbury's states 41mg caffeine for a 250ml bottle of Rodd's Original Latte. | Knowing the amount helps me choose a serving that suits my caffeine preference; for an evening run, I may prefer a decaffeinated option. |
| Dietary fit | Check the milk or oat base, ingredients and allergen statement. Tesco's concentrate is labelled suitable for vegans; Sainsbury's describes Nolo's decaf oat latte as dairy-free. Tesco says Starbucks Skinny Latte is lactose-free but not suitable for people with a milk allergy. | If I avoid dairy or have a milk allergy, ‘lactose-free’ alone does not answer whether the drink meets my requirements. |
| Preparation and portion | Check whether the coffee is ready to drink, needs dilution or comes in a multi-serve bottle. Tesco instructs users to mix 100ml of its concentrate with 100ml cold water; Waitrose lists a 750ml Starbucks multi-serve latte. | I need a portion and preparation method that work before my run, especially if the bottle contains more than I intend to drink. |
A coffee can have 0g sugars yet contribute little carbohydrate. Tesco Groceries lists just 2.4g carbohydrate in a prepared 200ml glass of its unsweetened concentrate.
Decide separately whether you want coffee and whether you want pre-run food or drink for carbohydrate. Check the amounts per portion rather than relying on the front-of-pack wording.
Caffeine amounts are not interchangeable between drinks. Sainsbury's states 41mg per bottle for Rodd's Original Latte; a product name such as ‘strong’ does not tell you the milligrams in your serving.
Choose a declared amount when you need to keep track of caffeine, check the current pack and account for other sources during the day.
Tesco's listing says Starbucks Skinny Latte is lactose-free but unsuitable for people with a milk allergy. Sainsbury's lists 4.8g sugars and 6.8g fibre per 250ml can of Nolo's dairy-free decaf oat latte.
Read the ingredients, allergen statement and nutrition panel for the exact drink. If it is new to your routine, try it during ordinary training rather than immediately before an important run.
With a 750ml bottle such as the Starbucks latte listed by Waitrose, the amount of carbohydrate and sugars you consume depends on how much you pour.
Measure your intended serving and use the nutrition information for that amount.
These product examples show how cold-brew formats differ; a retailer listing is not a claim that every product from that retailer has the same ingredients or nutrition.
Tesco Groceries lists an unsweetened 500ml cold-brew concentrate to dilute with water.
M&S lists a 250ml Classic Latte Cold Brew made with cold brew coffee, semi-skimmed milk and sugar.
Sainsbury's listings include Rodd's no-added-sugar oat latte and Nolo's decaffeinated oat cold-brew latte.
Waitrose lists Starbucks Multiserve Skinny Latte No Added Sugar Iced Coffee in a 750ml lactose-free milk-drink format.
Coffee Friend UK lists Sandows ready-to-drink black cold brew in a 200ml bottle.
This concentrate is an option to consider if you want a black cold brew that you prepare with water before a 5k. Check its current pack before counting it as carbohydrate fuel or planning around a particular caffeine amount.
No image available
For a black cold brew before a run, the product description states 0g sugars and gives instructions to add about 200ml water to one 25ml pouch. Check the current pack for the intended preparation, caffeine per serving and prepared serving’s nutrition before using it in a fuelling plan.
Do not count zero-sugar cold brew as carbohydrate fuel without checking its nutrition. Tesco Groceries lists 2.4g carbohydrate and 12 kcal in a prepared 200ml glass of its unsweetened concentrate. If you want carbohydrate before running, plan that separately around what you intend to eat and drink.
No. Sainsbury's lists 4.8g sugars per 100ml for Rodd's no-added-sugar Original Latte, while Tesco lists 3.7g sugars per 100ml for Starbucks Skinny Latte No Added Sugar. Read ‘of which sugars’ for the serving you will drink.
Start with the caffeine amount for the product and portion you intend to have, then account for other sources during the day. Sainsbury's states 41mg per 250ml bottle of Rodd's Original Latte. The European Food Safety Authority considers caffeine from all dietary sources, and individual responses can differ.
Check which requirement the particular drink meets. Tesco labels its unsweetened concentrate suitable for vegans, and Sainsbury's describes Nolo's oat latte as dairy-free. Tesco describes Starbucks Skinny Latte as lactose-free but says it is not suitable for people with a milk allergy.
The NHS advises having no more than 200mg caffeine a day during pregnancy, counting sources beyond coffee as well. Check the amount in the exact cold brew and serving you choose rather than treating a pre-run drink separately from your daily total.