By Ethan BrooksUpdated November 2026
Runners on low carbohydrate or ketogenic diets often find that standard energy gels, with 20 to 25 grams of sugar per pack, don’t sit well with how they eat every other day. The best low carb energy gels give you a fast-digesting fuel source in a smaller carbohydrate dose, often paired with electrolytes or added fats and proteins to keep your stomach settled during long efforts. The picks below were selected by comparing manufacturer specifications, brand reputation and common owner feedback patterns, with attention to carbohydrate content per gel, sodium, ingredient simplicity and how well each product suits different distances and training stages.
Our top picks at a glance
- 1
TOP CHOICEBest overallHuma Plus Chia Energy GelView on Amazon - 2
TOP CHOICEBest for sensitive stomachsUCAN Energy Gel Variety PackView on Amazon - 3
TOP CHOICEBest for electrolyte replacementSalted Original 50g Energy GelView on Amazon - 4
Best budget pickHoney Stinger Organic Fruit Smoothie Energy GelView on Amazon - 5
Best for shorter effortsOriginal Energy Gels 24 GelView on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Huma Plus Chia Energy Gel | Long runs and marathon training | Double electrolytes with chia-based real food ingredients |
| UCAN Energy Gel Variety Pack | Athletes with sensitive stomachs | Sugar-free, slow-release energy from a plant-based carbohydrate |
| Salted Original 50g Energy Gel | Hot weather and heavy sweaters | 450 mg sodium per gel with a thin, easy-to-swallow texture |
| Honey Stinger Organic Fruit Smoothie Energy Gel | Runners who want a familiar gel at a lower cost | Organic ingredients, gluten free and caffeine free |
| Original Energy Gels 24 Gel | Shorter runs, tempo sessions and quick top-ups | 25 g carbs and 100 calories per gel with no gelling agents |
Huma Plus Chia Energy Gel
Double Electrolytes, Real Food, Stomach Friendly Energy, 6 Original and 6 Plus Gels Huma Plus – Chia Energy Gel, Original and Plus Variety 12ct
Best for: Long runs and marathon training with a focus on electrolyte replacement 5 Best High Intensity Interval Training Low Impacts (2026): Our Picks goes further into this.
This pack suits runners who want a real-food gel with chia seeds and a double dose of electrolytes, especially those training through long sessions in warm conditions where sodium loss adds up.
Key specs
- Sold as a 12-count variety of Original and Plus gels
- Chia-based energy gel formulated with added electrolytes
- Designed as a stomach-friendly alternative to standard gels
Pros
- Electrolyte content helps with sweat losses on long efforts
- Real-food ingredient list appeals to runners who avoid heavily processed fuel
- Variety pack lets you test both formulas across a training block
Cons
- Chia texture can feel thicker than thin, watery gels
- Flavor options are more limited than some competitors
Bottom line: A strong choice for marathoners who sweat heavily and want electrolytes built into their fuel rather than mixed separately.
UCAN Energy Gel Variety Pack
Easy on the Stomach | No Sugar Crash | Ideal for Running, Cycling and other Endurance Training | Vegan Gluten Free Non-GMO UCAN Energy Gel | Variety Pack | 4 Flavors | Sugar Free | 12 Pack
Best for: Athletes with sensitive stomachs who want to avoid sugar spikes and crashes
This variety pack is built around a slow-digesting, plant-based carbohydrate, making it a fit for runners who have experienced gastrointestinal trouble with traditional sugar-based gels during hard efforts.
Key specs
- Sugar-free formulation, marketed as vegan, gluten free and non-GMO
- Four flavors in a 12-pack variety selection
- Designed for running, cycling and other endurance training
Pros
- Slow-release carbohydrate is less likely to cause a sudden energy spike
- Sugar-free profile suits runners managing blood sugar or following low-sugar diets
- Four flavors reduce palate fatigue during long training blocks
Cons
- Slow-release fuel may feel less immediate during race-pace efforts
- Some runners need to test timing carefully, since the energy curve differs from sugar gels
Bottom line: Best for runners who have struggled with sugar gels and are willing to adjust their fueling timing to a slower-digesting product.
Salted Original 50g Energy Gel
Salted Original 50g Energy Gel 12-Pack | 50g Carbs, 450mg Sodium | Vegan & Gluten-Free | Thin, Easy-to-Consume Running Gels | No Hydration Mix Needed | Fuel for Longer Efforts
Best for: Hot weather and heavy sweaters who need sodium along with carbohydrates
A thin, easy-to-consume gel with a high sodium load, this option fits runners training in heat or humidity, or anyone who notices salt crust on their clothes after long sessions.
Key specs
- 50 g carbohydrates per pack, as stated in the listing
- 450 mg sodium per gel
- Vegan and gluten free, with no hydration mix needed
Pros
- Sodium content is well suited to heavy sweaters and hot conditions
- Thin consistency is easy to swallow with water
- No mixing required, which simplifies race-day logistics
Cons
- The salty flavor is not for everyone and can become unappealing late in a race
- The 50 g carbohydrate dose is higher than a low carb approach may call for, so portion timing matters
Bottom line: A practical pick for runners training in heat who prioritize sodium replacement and don’t mind a savory taste.
Honey Stinger Organic Fruit Smoothie Energy Gel
Honey Stinger, Organic Fruit Smoothie Energy Gel, Gluten Free & Caffeine Free, for Exercise, Running and Performance, Sports Nutrition for Home & Gym, Pre and Mid Workout, 12 Pack, 13.2 Ounce
Best for: Runners who want a familiar gel at a lower cost without sacrificing ingredient quality
This organic, fruit-flavored gel is a dependable everyday option for runners who want a recognizable product with a clean label, particularly those using it for pre-workout fueling or mid-run top-ups.
Key specs
- Organic fruit smoothie flavor
- Gluten free and caffeine free
- Sold as a 12-pack, 13.2 ounce total
Pros
- Organic ingredient profile appeals to label-conscious runners
- Caffeine-free formula works for evening sessions or caffeine-sensitive athletes
- Widely available brand with a long track record in endurance sports
Cons
- Carbohydrate per gel is not a low carb profile, so it fits best as a moderate-carb option
- Fruit flavor and texture can feel heavier than thinner gels
Bottom line: A solid all-round choice for runners who want organic ingredients and a straightforward gel for pre-workout or mid-session use.
Original Energy Gels 24 Gel
Original Energy Gels 24 Gel | 25g Carbs, 100 Calories per Gel | No Preservatives or Gelling Agents | Light, Neutral Flavor & Thin Consistency | Vegan & Gluten-Free Endurance Fuel
Best for: Shorter runs, tempo sessions and quick carbohydrate top-ups
A light, neutral-flavored gel with a thin consistency, this 24-count option suits runners who need a modest, measured carbohydrate dose rather than a large bolus, especially for efforts under about 90 minutes.
Key specs
- 25 g carbohydrates and 100 calories per gel, as stated in the listing
- No preservatives or gelling agents
- Vegan and gluten free
Pros
- Measured 25 g dose makes portion control straightforward
- Neutral flavor works well for runners who tire of sweet gels
- Thin consistency is easy to take on the move
Cons
- Neutral taste may feel bland to runners who prefer bold flavors
- Not sodium-enriched, so heavy sweaters may need to add electrolytes separately
Bottom line: Ideal for runners who want a light, low-fuss gel for shorter sessions and controlled carbohydrate intake.
Buying Guide
Carbohydrate Content per Gel
Check the grams of carbohydrate per pack, not just the calorie count. Standard gels often carry 20 to 25 grams, while lower-carb options may provide less per serving or use slower-digesting carbohydrate sources. Matching the dose to your plan matters more than the headline number.
Good picks for this: Original Energy Gels 24 Gel, UCAN Energy Gel Variety Pack
Sodium and Electrolyte Content
Long runs in heat cause meaningful sodium loss. Look at the milligrams of sodium per gel and whether the product includes potassium or other electrolytes. If a gel is low in sodium, plan to replace it with salt tablets or an electrolyte drink during long efforts.
Good picks for this: Salted Original 50g Energy Gel, Huma Plus Chia Energy Gel
Carbohydrate Source and Digestion Speed
Maltodextrin and fructose digest quickly and suit race pace. Plant-based or slower-digesting carbohydrates release energy more gradually. Choose a faster source for hard efforts and a slower one if you have a sensitive stomach or want steadier energy over time.
Good picks for this: UCAN Energy Gel Variety Pack, Honey Stinger Organic Fruit Smoothie Energy Gel
Consistency and Ease of Swallowing
Thin gels are easier to take with water and less likely to stick to your teeth. Thicker, chia-based or fruit-puree gels can feel heavy during hard breathing. Try a sample before a long run to see how each texture sits with you.
Good picks for this: Original Energy Gels 24 Gel, Salted Original 50g Energy Gel
Ingredient List and Dietary Needs
Check for gluten, caffeine, added sugar and artificial ingredients. Vegan or gluten-free labels are useful for specific diets, and caffeine-free options suit evening training or caffeine sensitivity. Read the full ingredient list rather than relying on front-of-pack claims.
Good picks for this: Honey Stinger Organic Fruit Smoothie Energy Gel, UCAN Energy Gel Variety Pack
Flavor Variety and Palate Fatigue
Over a 16 to 20 week marathon block, flavor fatigue is a real issue. Variety packs let you rotate tastes, while a single flavor may be easier to stock in bulk. Consider how many gels you will consume per week before buying a large quantity of one flavor.
Good picks for this: UCAN Energy Gel Variety Pack, Huma Plus Chia Energy Gel
Use Case and Race Distance
Shorter sessions under 60 minutes may need little or no fuel. Efforts from 60 to 90 minutes often call for one gel, while marathon-distance runs usually require gels every 30 to 45 minutes. Match the gel’s dose and timing to your longest planned sessions.
Good picks for this: Original Energy Gels 24 Gel, Huma Plus Chia Energy Gel
FAQ
Are low carb energy gels suitable for a ketogenic diet?
Some are, but check the carbohydrate count and ingredient list carefully. Ketogenic approaches usually limit total daily carbohydrate, so even a single gel can represent a meaningful share. Consult a registered dietitian or your physician before adjusting fueling on a restricted diet.
How many low carb gels should I take during a marathon?
Many coaches suggest a gel every 30 to 45 minutes after the first hour, but the right number depends on your body weight, pace and how your stomach tolerates fuel. Practice your plan in training so you know what works before race day.
Do I need electrolytes if I use a low carb gel?
It depends on sweat rate and conditions. Gels with sodium or electrolytes reduce the need for separate supplements, but heavy sweaters in hot weather often need additional salt. Test your intake during long training runs.
Can low carb gels cause stomach problems?
Any gel can cause gastrointestinal issues if taken with too little water or at too high a rate. Slower-digesting carbohydrates may reduce this risk for some runners. Introduce a new product during training rather than on race day.
Are plant-based gels as effective as sugar gels?
They provide carbohydrate energy, but digestion is slower, so timing matters. Plant-based options may suit steady efforts better than hard surges. Individual response varies, so trial in training is the most reliable guide.
How should I store energy gels?
Keep gels in a cool, dry place away from direct sun and heat. Check the package for storage guidance and expiration dates, and avoid leaving them in a hot car for long periods.
Conclusion
For most runners, Huma Plus Chia Energy Gel is a strong all-round choice thanks to its electrolytes and real-food profile. Runners with sensitive stomachs may prefer the UCAN Energy Gel Variety Pack, while heavy sweaters in heat will benefit from the sodium content of the Salted Original 50g Energy Gel. The Honey Stinger Organic Fruit Smoothie Energy Gel suits organic-focused runners on a budget, and the Original Energy Gels 24 Gel fits shorter sessions and controlled portions. Test any gel during training before committing to it for a race.
Sources
- Background research on carbohydrate metabolism and exercise fueling (nih.gov)
- Nutrient composition data for carbohydrates and sodium in foods (usda.gov)
- Position guidance on nutrition and fluid replacement for endurance athletes (acsm.org)
Related reading
- Top 7 Carb Boom Energy Gels Worth Considering in 2026
- 6 Best High Carb Energy Gels for Marathon Runners (2026)
- Top 8 Whole Foods Energy Gels Worth Considering in 2026
- Top 7 Healthy Energy Gels for Running Worth Considering in 2026
- Top 7 Fat Based Energy Gels for Long Endurance Fueling
About Ethan Brooks
Ethan Brooks is part of our editorial team and reviews and edits our marathon & half-marathon guides, checking product details against manufacturer specifications and owner feedback.
