By Lauren HollandUpdated November 2026
If you are trying to work out how often to take energy gels when running, the honest answer is that it depends on how long you are out, how hard you are working, and how much carbohydrate each gel delivers. Most runners who train beyond about 75 minutes benefit from a gel every 30 to 45 minutes, but the exact interval, the number of gels, and the product you choose all matter. This guide compares six gels across the criteria that matter most: carbohydrate per serving, carbohydrate type, caffeine content, flavor and texture, packaging, and how well each product fits a range of stomachs and training plans. The picks below are based on specifications, brand reputation, and patterns in owner feedback. We did not test these products ourselves.
Our top picks at a glance
- 1
TOP CHOICEBest overallPrecision Fuel PF30 Energy Gels – Mild, Neutral Flavour Running Gels fView on Amazon - 2
TOP CHOICEBest for high-carb long runsPrecision Fuel PF90 Energy Gels – Mild Flavour Running Gels for EnduraView on Amazon - 3
TOP CHOICEBest budget pickNewTrition® Isotonic Energy Gel – 20g Carbs, No Water Needed – Zero CaView on Amazon - 4
Best for electrolyte replacementClean Salt Electrolytes Gel, Potassium & Magnesium, Natural Energy RunView on Amazon - 5
Best for caffeine-free fuelingHydration, Never2, Ultra Triathlons, Cycling & Marathons, Running NeveView on Amazon - 6
Best for a late-race boostPerformance Nutrition & Hydration, Never2, Ultra Triathlons, Cycling &View on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Precision Fuel PF30 Energy Gels (Pack of 15) | Best overall | 30g carbohydrate per gel, mild neutral flavor |
| NewTrition Isotonic Energy Gel Variety Pack | Best budget pick | 20g carbs, no water needed, zero caffeine |
| Clean Salt Electrolytes Gel | Best for electrolyte replacement | Potassium and magnesium added |
| Precision Fuel PF90 Energy Gels (Pack of 10) | Best for high-carb long runs | 90g carbohydrate across the pack, easy to digest |
| Never2 Neversecond C30 Energy Gel | Best for caffeine-free fueling | 30g carbohydrate, orange flavor |
| Never2 Neversecond C30+ Energy Gel + Caffeine | Best for a late-race boost | 30g carbohydrate with caffeine, berry flavor |
Precision Fuel PF30 Energy Gels – Mild, Neutral Flavour Running Gels for Endurance Athletes, 30g Carbohydrate, Easy-to-Digest, Perfect for Running & Long-Duration Sports (Pack of 15)
Precision Fuel PF30 Energy Gels – Mild, Neutral Flavour Running Gels for Endurance Athletes, 30g Carbohydrate, Easy-to-Digest, Perfect for Running & Long-Duration Sports (Pack of 15)
Best for: Best overall
This is a good fit for runners who want a dependable, mild-tasting gel for half marathons and marathons and who prefer to carry a larger supply in one pack.
Key specs
- 30g carbohydrate per gel (per the listing name)
- Pack of 15
- Mild, neutral flavor
Pros
- Neutral flavor suits runners who tire of sweet gels
- Higher carbohydrate per serving means fewer gels needed per hour
- Large pack suits training blocks and race week
Cons
- Neutral taste may feel bland to some runners
- Gel-only format means you need water with it
Bottom line: A strong default for most marathoners who want a single gel to rehearse in training and carry on race day.
NewTrition Isotonic Energy Gel – 20g Carbs, No Water Needed – Zero Caffeine Running Gel with Fast Absorption & Smooth Easy Digestion – Endurance Fuel Gels For Runners & Cycling 50ml, Variety Pack
NewTrition® Isotonic Energy Gel – 20g Carbs, No Water Needed – Zero Caffeine Running Gel with Fast Absorption & Smooth Easy Digestion – Endurance Fuel Gels For Runners & Cycling 50ml, Variety Pack
Best for: Best budget pick
Suited to runners who want to try several flavors or who are building a fueling habit and prefer a lighter carbohydrate dose per gel.
Key specs
- 20g carbohydrate per gel (per the listing name)
- Zero caffeine
- 50ml variety pack
Pros
- Works without extra water, which simplifies carrying
- Zero caffeine suits runners who avoid stimulants
- Variety pack lets you compare flavors
Cons
- Lower carbohydrate per gel means more gels per hour
- Variety packs can be less convenient than a single flavor for training consistency
Bottom line: A practical choice for beginners and for anyone sampling flavors before committing to one gel.
Clean Salt Electrolytes Gel, Potassium & Magnesium, Natural Energy Running Gels, For Endurance, Workouts & Active Seniors Natruveda Hydration Honey Energy Gel Packs for Runners
Clean Salt Electrolytes Gel, Potassium & Magnesium, Natural Energy Running Gels, For Endurance, Workouts & Active Seniors Natruveda Hydration Honey Energy Gel Packs for Runners
Best for: Best for electrolyte replacement
Aimed at runners in hot conditions or on long efforts who are concerned about sodium, potassium, and magnesium losses alongside carbohydrate intake.
Key specs
- Contains potassium and magnesium (per the listing name)
- Honey-based energy gel packs
Pros
- Adds electrolytes that many runners want on hot-weather long runs
- Natural-positioned ingredients appeal to some buyers
- Useful as a supplement to a separate carbohydrate source
Cons
- Electrolyte content does not replace a full sports drink plan for heavy sweaters
- Carbohydrate per pack is not stated clearly in the listing name, so check the label before planning intake
Bottom line: Best for runners who want electrolytes built into their gel strategy; check the nutrition label against your sweat and race-day needs.
Precision Fuel PF90 Energy Gels – Mild Flavour Running Gels for Endurance Athletes, 90g Carbohydrate, Easy-to-Digest, Perfect for Running & Long-Duration Sports, 153g (Pack of 10)
Precision Fuel PF90 Energy Gels – Mild Flavour Running Gels for Endurance Athletes, 90g Carbohydrate, Easy-to-Digest, Perfect for Running & Long-Duration Sports, 153g (Pack of 10)
Best for: Best for high-carb long runs
For runners who need to take in a high carbohydrate load per hour on marathon-length efforts and want a mild, easy-to-digest format.
Key specs
- 90g carbohydrate across the listed package (per the listing name)
- Pack of 10, 153g total weight
- Mild flavor
Pros
- High carbohydrate density reduces the number of gels needed per hour
- Mild flavor is easier to repeat during long runs
- Pack size suits a full training cycle
Cons
- Higher per-gel dose is harder for runners with sensitive stomachs to tolerate at first
- Requires careful training rehearsal before race day
Bottom line: Built for experienced marathoners who have already practiced high-carbohydrate intake and want fewer gels per hour.
Hydration, Never2, Ultra Triathlons, Cycling & Marathons, Running Neversecond C30 Energy Gel, Performance Nutrition, Orange, 12-Count Pack
Hydration, Never2, Ultra Triathlons, Cycling & Marathons, Running Neversecond C30 Energy Gel, Performance Nutrition, Orange, 12-Count Pack
Best for: Best for caffeine-free fueling
A good option for runners who want a caffeine-free orange gel for training and racing across marathon and ultra distances.
Key specs
- C30 designation (per the listing name)
- Orange flavor
- 12-count pack
Pros
- Citrus flavor is familiar to many runners
- 12-count pack covers a training block
- Positioned for endurance events of several types
Cons
- Exact carbohydrate per gel should be confirmed on the package before planning intake
- Citrus flavor may not suit every palate
Bottom line: A sensible pick for caffeine-free racing and training, provided you verify the label dose.
Performance Nutrition & Hydration, Never2, Ultra Triathlons, Cycling & Marathons, Training, Running Neversecond C30+ Energy Gel + Caffeine, Nutrition, Berry, 12-Count Pack
Performance Nutrition & Hydration, Never2, Ultra Triathlons, Cycling & Marathons, Training, Running Neversecond C30+ Energy Gel + Caffeine, Nutrition, Berry, 12-Count Pack
Best for: Best for a late-race boost
Suited to runners who use caffeine strategically in the final stage of a marathon or during fatigue-prone portions of a long event.
Key specs
- C30+ designation with caffeine (per the listing name)
- Berry flavor
- 12-count pack
Pros
- Caffeine option is useful for late-race efforts
- Berry flavor offers a change from citrus
- 12-count pack suits training and racing
Cons
- Caffeine is not appropriate for everyone and can disturb sleep or sensitive stomachs
- Verify exact caffeine and carbohydrate content on the package
Bottom line: Best for experienced runners who already tolerate caffeine and want it timed for late-race use.
Buying Guide
Carbohydrate per Gel
The carbohydrate figure on the label determines how many gels you need per hour. Many runners aim for roughly 30 to 60 grams of carbohydrate per hour during sustained efforts longer than about 90 minutes, though individual tolerance varies. A 30g gel every 30 to 40 minutes is a common approach, while a 20g gel usually means taking one every 20 to 30 minutes. Check the number on the package rather than relying on the product name.
Good picks for this: Precision Fuel PF30 Energy Gels, Precision Fuel PF90 Energy Gels
Carbohydrate Type and Absorption
Gels that combine multiple carbohydrate sources, such as maltodextrin and fructose, are designed to be absorbed through different intestinal transporters, which may help reduce gut discomfort at higher intakes. Read the ingredient list and nutrition panel to see what you are getting.
Good picks for this: NewTrition Isotonic Energy Gel Variety Pack, Precision Fuel PF90 Energy Gels
Caffeine Content
Caffeine can help with perceived effort and alertness late in a race, but it is not necessary for everyone. Runners who are sensitive to caffeine, who are pregnant, or who have heart conditions should check with a doctor before using caffeinated gels. Caffeine-free options avoid these concerns.
Good picks for this: Never2 Neversecond C30 Energy Gel, NewTrition Isotonic Energy Gel Variety Pack
Electrolyte Content
Long or hot runs can cause meaningful sodium and potassium losses. Gels with added electrolytes may help on those days, though they rarely replace a full electrolyte plan for heavy sweaters. Consider your sweat rate and the weather, and consult a sports dietitian if you have concerns about hyponatremia risk.
Good picks for this: Clean Salt Electrolytes Gel, Never2 Neversecond C30+ Energy Gel + Caffeine
Flavor and Texture
Flavor fatigue is a real problem on long runs. A mild or neutral gel is easier to keep taking, while a stronger flavor can become unappealing after several hours. Try flavors in training before race day, and avoid trying a new flavor for the first time on a race morning.
Good picks for this: Precision Fuel PF30 Energy Gels, Never2 Neversecond C30 Energy Gel
Packaging and Carrying
Single-serve packets are easy to tuck into a race belt or shorts pocket. Packs of 10 to 15 cover most training blocks. Check whether you need water to take the gel, since some formats are designed to be taken with a sip of water and others are more flexible.
Good picks for this: NewTrition Isotonic Energy Gel Variety Pack, Precision Fuel PF30 Energy Gels
Rehearsal and Gut Training
The product matters less than how well you have rehearsed it. Practice your chosen gel on long training runs, starting with a smaller intake and building up. Note how often you take it, when you take it, and how your stomach responds. This is the single most useful step in working out how often to take energy gels when running.
Good picks for this: Precision Fuel PF30 Energy Gels, Precision Fuel PF90 Energy Gels
FAQ
How often should you take energy gels when running?
For most runners in sustained efforts longer than about 75 to 90 minutes, a gel every 30 to 45 minutes is a common starting point. The right interval depends on the carbohydrate content of the gel and how much your stomach tolerates. Practice in training to find your own schedule.
How many energy gels do you need for a marathon?
Many marathoners plan for roughly three to five gels across the race, depending on their pace, body size, and the carbohydrate per gel. Your total depends on your target intake per hour and the timing you rehearse. A sports dietitian can help you set a personal plan.
Should you take energy gels before running?
Some runners take a gel about 15 to 30 minutes before a race or long run to top up glycogen, while others skip it. A pre-run gel is most useful when followed by a longer effort. Test this in training, since a gel close to start time can cause discomfort for some people.
Do you need water with energy gels?
Many gels are designed to be taken with water, which helps with digestion and absorption. Some formats are labeled as needing no water. Read the packaging for guidance and plan your water intake around the gel schedule.
Can energy gels cause stomach problems?
Yes, especially at high intakes or if you take gels without training your gut. Stomach upset, cramping, or nausea are common complaints. Starting with a lower intake, spacing gels consistently, and rehearsing on long runs can reduce the risk. Persistent symptoms warrant a conversation with a doctor or sports dietitian.
Is caffeine in energy gels safe for everyone?
Caffeine affects people differently. Runners who are pregnant, have heart conditions, take medications that interact with caffeine, or are sensitive to stimulants should talk to a doctor before using caffeinated gels. Caffeine-free options are available if you prefer to avoid it.
Should you use energy gels for a half marathon?
Many half marathoners do not need gels, particularly if they are running under about 90 minutes. For longer half marathons or harder efforts, one or two gels may help. Rehearse in training so race day holds no surprises.
Conclusion
For most runners, the answer to how often to take energy gels when running is a gel every 30 to 45 minutes once effort extends past roughly 75 to 90 minutes, adjusted for the carbohydrate in each gel and your own tolerance. Precision Fuel PF30 is a solid default for marathoners who want a mild, reliable gel. Precision Fuel PF90 suits experienced runners who have already practiced high-carbohydrate intake. The NewTrition variety pack works well for beginners sampling flavors. Clean Salt Electrolytes Gel fits runners who want electrolytes alongside carbohydrate, while the two Never2 options cover caffeine-free and caffeinated late-race use. Whichever you choose, rehearse your plan in training first.
Sources
- Research summaries on carbohydrate intake and exercise performance (nih.gov)
- Position guidance on nutrition and fluid needs for endurance exercise (acsm.org)
- Practical sports nutrition guidance from registered dietitian professionals
Related reading
- Energy Gels Before Running: When to Take Them and How Much
- When to Take Energy Gels: A Marathoner's Timing Guide
- When to Take Energy Gels During Half Marathon: A Step-by-Step Timing Guide
- Top 7 Healthy Energy Gels for Running Worth Considering in 2026
About Lauren Holland
Lauren Holland is part of our editorial team and reviews and edits our marathon & half-marathon guides, checking product details against manufacturer specifications and owner feedback.
