Mid-Ride Fueling: Comparing Gels, Energy Bars, and Real Food

Fueling during long rides is a real challenge for many cyclists: when should you eat a gel? Is an energy bar better than real food? How do you avoid gut distress? This article scientifically compares three major categories of on-bike fueling options to help you build the strategy that works best for you.

Why Do You Need to Fuel During a Ride?

The body’s muscle glycogen stores are limited, generally enough to support 1.5-2 hours of high-intensity riding. Beyond that, if you don’t refuel, dropping blood sugar leads to:

• Noticeably slower riding pace
• Poor concentration and worse decision-making
• Muscle weakness, making climbs especially hard
• Low mood and the feeling of “the bonk”

Basic fueling principle: consume 60-90 grams of carbohydrate per hour (depending on intensity)

A Full Comparison of the Three Fueling Categories

Energy Gels

Well-known brands: GU Energy, Maurten, SIS Go Gel, PowerBar Gel

Pros:

• Fast absorption, ideal before a hard sprint or a climb
• No chewing needed, so it works even when you’re breathing hard
• Brands like Maurten use hydrogel technology, significantly reducing gut discomfort

Cons:

• Some people are sensitive to high fructose content, causing stomach pain or diarrhea
• Extended use (over 4 hours) can lead to “gel fatigue”
• Needs to be taken with enough water (at least 150-200ml per packet)

Energy Bars

Well-known brands: Clif Bar, PowerBar, Trek Bar, SIS Go Bar

Pros:

• Contains more micronutrients (vitamins, minerals)
• Chewing provides a stronger sense of fullness psychologically
• Some brands (like Clif Bar) contain protein, suitable for rides over 3 hours

Cons:

• Hard to chew during high-speed riding or climbing
• Some bars are higher in fat, which slows absorption
• Can melt or lose shape in hot weather

Real Food

Common choices and carb content:

Pros:

• Best gut tolerance, rarely causes discomfort
• High psychological satisfaction, less likely to trigger “food fatigue” on long rides
• Provides electrolytes (sodium, potassium) and micronutrients
• Especially important in ultra-long events (triathlons, 200km+)

Cons:

• Requires advance preparation, more hassle to carry
• Not easy to grab at high speed
• Some foods (like rice balls) have limited shelf life in hot conditions

Practical Strategy: A Mixed Approach

The most effective strategy is usually to flexibly combine all three categories based on riding intensity and duration:

Training or Races Under 3 Hours

• First 1.5 hours: Energy bars or real food (bananas, dates)
• Last 1.5 hours (as intensity rises): Switch to energy gels

3-6 Hour Long Rides

• Low-intensity segments: Real food (one serving per hour)
• Moderate-intensity segments: Energy bars with water
• Before sprints or key climbs: Energy gels

6+ Hour Ultra-Long Rides

• First half: Mainly real food, refueling every 45-60 minutes
• Second half: Alternate between bars and gels, with real food (potatoes, fruit) taken at aid stations

The Importance of Gut Training

Gut tolerance during riding can be trained! For beginners:

1. Start practicing on-bike fueling from the beginning of training so your gut can adapt
2. Start with real food, then gradually try gels
3. Always test new products in training — never try something new on race day
4. Always pair fueling with enough water

Timing Recommendations

• Don’t wait until you’re hungry: by the time hunger hits, your energy has already started dropping
• Set fueling reminders: refuel every 45-60 minutes
• Pre-fuel before climbs: take an energy gel 10-15 minutes before a key climb

Conclusion

There’s no perfect fueling product, only the strategy that’s best for you. Through repeated testing in training, find the combination your gut tolerates best, and adjust flexibly based on race intensity. Remember: fueling is a skill, and like pedaling technique, it takes practice and refinement.

Related Reading

• A Complete Guide to Energy Gel Types: Real Solid, Semi-Solid, and Liquid
• Energy Bars vs. Energy Gels for Cycling: When to Choose Which
• Solid Food vs. Energy Gels in Races: Choosing the Best Fueling Format for You
• A Buying Guide to Sports Fuel: The Differences Between Gels, Bars, and Electrolytes