By Ethan BrooksUpdated November 2026
Mule bar energy gels are a popular choice for runners who want quick carbohydrates without a long chewing session mid-run. This roundup looks at six mule bar energy gels and related fueling products, focusing on what matters most for distance running: carbohydrate content per serving, ingredient simplicity, flavor variety, caffeine content, and how well each option fits into a training or race-day plan. Selection was based on product specifications, brand reputation, and general patterns in owner feedback rather than hands-on testing.
Our top picks at a glance
- 1
TOP CHOICEBest overallGU Energy, Original Energy Gels, Caffeine-Free Mixed – 24 CountView on Amazon - 2
TOP CHOICEBest for natural ingredientsHoney Stinger Organic Fruit Smoothie Energy Gel, 12 PackView on Amazon - 3
TOP CHOICEBest for clean-label fuelingMUIR Red Raspberry Energy Gel for Runners – 10 PackView on Amazon - 4
Best for sensitive stomachsHuma Chia Energy Gel, Variety, 12 GelsView on Amazon - 5
Best for chewable alternativeSkratch Labs Energy Chews, Variety Pack, 10 PackView on Amazon - 6
Best budget pickBPN Go Gel Endurance Fuel, 15 Single-Serving Variety PackView on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| GU Energy, Original Energy Gels, Caffeine-Free Mixed – 24 Count | Consistent race-day fueling | Familiar gel texture in a large variety count |
| Honey Stinger Organic Fruit Smoothie Energy Gel, 12 Pack | Runners preferring organic, natural ingredients | Organic fruit-based flavor, gluten and caffeine free |
| MUIR Red Raspberry Energy Gel for Runners, 10 Pack | Runners wanting a short, whole-food ingredient list | Organic, vegan, non-GMO formulation |
| Huma Chia Energy Gel, Variety, 12 Gels | Runners with sensitive stomachs | Chia-based gel with real-food ingredients |
| Skratch Labs Energy Chews, Variety Pack, 10 Pack | Runners who dislike gel texture | Chewable format with real fruit flavor |
| BPN Go Gel Endurance Fuel, 15 Single-Serving Variety Pack | Budget-conscious training volume | 100 calories and 24g carbohydrates per pack |
GU Energy, Original Energy Gels, Caffeine-Free Mixed – 24 Count
GU Energy, Original Energy Gels, Caffeine-Free Mixed – 24 Count
Best for: Consistent race-day fueling
This is a practical choice for runners who want a well-known gel format and a large supply for long training blocks. The caffeine-free mix suits runners who prefer to add caffeine separately or avoid it on certain days.
Key specs
- 24 count gels in a mixed flavor assortment
- Caffeine-free formulation
- Single-serving packets for easy carrying
Pros
- Familiar, widely used gel texture
- Large count reduces repeat purchases during a marathon build
- Caffeine-free option works for evening or sensitive runners
Cons
- Some runners find the consistency thick and need water to wash it down
- Flavor mix is not customizable within the pack
Bottom line: A strong default for runners who want a dependable, high-count gel for marathon training and race day.
Honey Stinger Organic Fruit Smoothie Energy Gel, 12 Pack
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 preferring organic, natural ingredients
Honey Stinger’s fruit smoothie flavor appeals to runners who want a fruit-forward taste and a formulation labeled organic. It is also free of gluten and caffeine, which broadens its use.
Key specs
- 12 pack, 13.2 ounce total weight
- Organic fruit smoothie flavor
- Gluten free and caffeine free
Pros
- Fruit-based flavor many runners find easier to tolerate
- Organic labeling suits runners focused on ingredient quality
- Caffeine-free, so it works at any time of day
Cons
- Flavor options within a single pack may be limited
- Some runners report a looser texture than traditional gels
Bottom line: Best for runners who prioritize organic ingredients and a fruit flavor during long runs.
MUIR Red Raspberry Energy Gel for Runners – 10 Pack
MUIR Red Raspberry Energy Gel for Runners – 10 Pack | Organic Real Food Endurance Gel | Fast-Burning, Vegan, Paleo, Non-GMO, Gluten-Free | Clean Energy for Running, Cycling, and Marathon Training
Best for: Runners wanting a short, whole-food ingredient list
MUIR positions its gels around organic, real-food ingredients and a clean-label approach. It suits runners who read ingredient lists closely and want fueling that resembles whole food.
Key specs
- 10 pack of single-serving gels
- Red raspberry flavor
- Labeled organic, vegan, paleo, non-GMO and gluten free
Pros
- Short ingredient list appeals to clean-label buyers
- Vegan and gluten-free labeling broadens who can use it
- Fruit-forward flavor is often described as mild
Cons
- Smaller 10-count pack means more frequent reordering for high-volume training
- Natural ingredients can mean a less intense sweetness than some runners expect
Bottom line: A good match for runners who prioritize a clean, real-food label over the largest possible supply.
Huma Chia Energy Gel, Variety, 12 Gels
Real Food, Stomach Friendly Energy Gels Huma Chia Energy Gel, Variety, 12 Gels
Best for: Runners with sensitive stomachs
Huma’s chia-based gels are designed around a real-food, easy-to-digest approach. The chia base gives a different texture from standard maltodextrin gels, which some runners prefer for gut comfort.
Key specs
- 12 gels in a variety assortment
- Chia-based real-food formulation
- Single-serving packets
Pros
- Real-food ingredients often appeal to runners with GI sensitivity
- Variety pack lets runners test flavors before committing
- Chia base provides a distinct, non-syrupy texture
Cons
- Texture can be unfamiliar and take adjustment during training
- Carbohydrate delivery per gel may feel lighter for runners used to sports-drink-level sugar
Bottom line: Worth trying for runners who experience stomach trouble with conventional gels and want a real-food alternative.
Skratch Labs Energy Chews, Variety Pack, 10 Pack
Gummies for running, cycling & endurance, quick carbs for athletes, easy to digest, real fruit, gluten free, vegan Skratch Labs Energy Chews, Gel Alternative, Variety Pack, 10 Pack
Best for: Runners who dislike gel texture
Skratch Labs’ energy chews are a gel alternative for runners who find traditional gels heavy or unpleasant. They are made with real fruit and designed for easy digestion during endurance efforts.
Key specs
- 10 pack variety assortment
- Chewable format rather than gel
- Gluten free and vegan labeling
Pros
- Chewable format avoids gel texture complaints
- Real fruit flavors appeal to runners wanting natural taste
- Easy to portion across a long run
Cons
- Chewing takes more time and effort than squeezing a gel while running
- Carbohydrate delivery pace may be slower than a gel in some situations
Bottom line: A strong option for runners who want quick carbs in a non-gel format, especially for training runs.
BPN Go Gel Endurance Fuel, 15 Single-Serving Variety Pack
24g of Carbohydrates & 100 Calories per Pack, Vegan + Gluten Free Running Gel BPN Go Gel Endurance Fuel, 15 Single-Serving Variety Pack
Best for: Budget-conscious training volume
BPN’s Go Gel is designed as a 100-calorie endurance fuel with 24 grams of carbohydrates per pack. The 15-count variety pack suits runners who need a steady supply across a long training cycle.
Key specs
- 15 single-serving packs in a variety assortment
- Approximately 100 calories and 24g carbohydrates per pack, as stated on the listing
- Vegan and gluten-free labeling
Pros
- Clearly stated carbohydrate and calorie content
- Larger count supports high-volume training blocks
- Vegan and gluten-free options widen compatibility
Cons
- Some runners report a sweeter taste than they prefer
- Less brand familiarity than GU or Honey Stinger among some runners
Bottom line: A sensible choice for runners who want a labeled carbohydrate profile and a large supply for training.
Buying Guide
Carbohydrate Content per Serving
Most runners aim for roughly 30 to 60 grams of carbohydrate per hour during moderate to long efforts, though needs vary with body size, pace and gut tolerance. Check the carbohydrate grams per gel, then calculate how many you will need per hour. A gel with 20 grams requires more packs per hour than one with 25 to 30 grams.
Good picks for this: BPN Go Gel Endurance Fuel, GU Energy Original Energy Gels Worth reading next: Energy Bars Chews or Gels (2026): Which Is Better for Marathon Fueling?.
Caffeine Content
Caffeine can improve perceived effort for some runners, but it can also cause jitters or stomach upset. Decide whether you want caffeine in your gel, and whether you will use it in training as well as on race day. Caffeine-free options allow you to add it separately and control the dose.
Good picks for this: Honey Stinger Organic Fruit Smoothie Energy Gel, GU Energy Original Energy Gels
Ingredient List and Labeling
Shorter ingredient lists and labels such as organic, vegan or non-GMO appeal to many buyers. Read the full ingredient panel rather than relying on front-of-package claims. Look for familiar carbohydrate sources and check for any allergens you need to avoid.
Good picks for this: MUIR Red Raspberry Energy Gel for Runners, Huma Chia Energy Gel
Texture and Gut Tolerance
Gel texture ranges from thick and syrupy to looser and smoother. Some runners find chia-based or fruit-based gels easier on the stomach, while others do well with traditional maltodextrin formulas. Because gut tolerance is individual, practice with any new product during training runs before race day.
Good picks for this: Huma Chia Energy Gel, Skratch Labs Energy Chews
Pack Size and Training Volume
Estimate how many gels you will use per week during peak training. A marathon build can easily require dozens of gels across long runs. Larger counts reduce reordering, while smaller packs let you rotate flavors and test products without a big commitment.
Good picks for this: GU Energy Original Energy Gels, BPN Go Gel Endurance Fuel
Format: Gel Versus Chew
Gels are squeezed from a packet and washed down with water, which is quick but can feel heavy. Chews require more time to eat but avoid gel texture complaints and can be easier for some runners to portion. Choose the format that you will actually consume reliably at race pace.
Good picks for this: Skratch Labs Energy Chews, Honey Stinger Organic Fruit Smoothie Energy Gel
Flavor Variety
Flavor fatigue is a real issue over a long training cycle. Variety packs let you rotate tastes, but make sure any flavor you plan to use on race day has been tried in training. A flavor that tastes good in a training run can become unappealing at mile 20.
Good picks for this: Huma Chia Energy Gel, BPN Go Gel Endurance Fuel
FAQ
How many energy gels should I take during a marathon?
Many marathoners take one gel every 40 to 45 minutes, or about 30 to 60 grams of carbohydrate per hour depending on body size and gut tolerance. Start fueling early in the race rather than waiting for fatigue, and practice your plan during long training runs. When to Take Energy Gels: A Marathoner's Timing Guide covers timing in more detail.
Do energy gels need to be taken with water?
Most gels are designed to be taken with water to help digestion and reduce stickiness. The amount of water needed varies by product, so check the label. Practice drinking water with each gel during training to avoid surprises on race day.
Can I use energy gels for a half marathon?
Many half marathon runners use fewer gels than marathoners, often one or two depending on finishing time and effort level. When to Take Energy Gels During Half Marathon: A Step-by-Step Timing Guide explains how to plan gels for a shorter race.
Are energy gels safe for people with sensitive stomachs?
Some runners tolerate gels well, while others experience cramping, nausea or diarrhea. Products with real-food ingredients or different carbohydrate sources may be easier for some people, but individual response varies. If you have a digestive condition, consult a healthcare professional or a registered dietitian before changing your fueling plan.
Do energy gels expire?
Yes. Check the best-by date on each packet and inspect for separation, odor or changes in texture. How Long Do Energy Gels Last? Shelf Life, Expiry Signs and Safe Use explains how to judge whether a gel is still safe to use.
Should I take caffeine with my energy gel?
Caffeine can help some runners feel more alert late in a race, but it is not necessary for everyone. Test caffeine during training to see how it affects your stomach and sleep. Caffeine-free gels let you add caffeine separately and control the dose.
What should I look for in a gel if I am a beginner?
Beginners often do well with a familiar gel format, a moderate carbohydrate content, and a flavor they enjoy. Start with a variety pack to find what your stomach tolerates, then commit to larger quantities once you know which options work for your training.
Conclusion
For most marathon and half marathon runners, GU Energy Original Energy Gels offers a dependable, high-count option for training and race day. Runners who prioritize organic or clean-label ingredients may prefer Honey Stinger or MUIR. Those with sensitive stomachs can explore Huma Chia Energy Gel, while runners who dislike gel texture may prefer Skratch Labs Energy Chews. BPN Go Gel suits those who want a labeled carbohydrate profile and a large supply. Whatever you choose, test it during long training runs before relying on it on race day.
Sources
- Guidance on physical activity, hydration and nutrition for adults (cdc.gov)
- Food labeling rules, ingredient disclosures and allergen information (fda.gov)
- Evidence-based sports nutrition and fueling for endurance athletes
Related reading
- Top 8 Whole Foods Energy Gels Worth Considering in 2026
- Top 8 Best Low Carb Energy Gels for Runners Compared (2026)
- Top 7 Slow Release Energy Gels for Marathon Fueling (2026)
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.
