Best Sports Nutrition Endurance & Energy Chews & Gels for Marathon Training (2026)
We ranked products by ingredient formulation (carb blend and electrolytes), dietary suitability (vegan/gluten-free), user ratings, pack formats, and value per serving
This roundup covers endurance and energy chews and gels suitable for marathon training, highlighting formulations, electrolytes, and on-the-go convenience to help runners fuel sustained efforts. Picks were chosen by comparing ingredient profiles, carbohydrate blends, electrolyte content, dietary tags (vegan, gluten-free), user ratings, and overall value for long-run fueling
Top Picks
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1
GU Energy Original Sports Nutrition Energy Gel variety pack
Vegan, gluten-free energy gels for on-the-go workouts in assorted flavors. Provides quick energy for high-intensity activities and long runs, with positive feedback on flavor variety and stomach comfort
- vegan, gluten-free, dairy-free
- assorted flavor variety
- instant energy for workouts
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2
GU Energy Original Energy Gel Variety Pack
Vegan, gluten-free energy gel in portable packets with 100 calories and electrolytes. Flavor variety supports sustained energy for workouts; customers praise taste and easy use during runs and long rides
- flavor variety
- vegan and gluten-free
- on-the-go energy with electrolytes
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3
GU Original Energy Gel Salted Caramel (24 pack)
GU Original Energy Gel provides quick energy with dual maltodextrin and fructose. Portable packet delivers ~100 calories with essential electrolytes for endurance activities, with user noting good flavor variety and stomach-friendly performance
- dual-sourced energy for lasting energy
- portable 100-calorie packets with electrolytes
- widely appreciated flavor variety
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4
GU Energy Original Energy Gel Variety Pack
Vegan, gluten-free energy gel in portable packets with 100 calories and electrolytes. Customers value the salted caramel flavor for sustained energy during long runs and races
- assorted flavors
- vegan and gluten-free
- portable energy with electrolytes
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5
GU Energy Original Energy Gel – vegan, on-the-go (S'mores flavor)
Vegan, dairy-free energy gel with maltodextrin and fructose for sustained energy in workouts. 100 calories per packet with electrolytes; convenient for training or racing; customers cite good taste and steady energy
- dual source energy (maltodextrin + fructose)
- 100 calories per packet with electrolytes
- vegan and dairy-free option