Fueling for Endurance

Endurance performance depends on energy availability, timing and consistency. This guide shows you how to fuel long runs, rides and sessions effectively.

1. The Role of Carbohydrates

Carbohydrates are the primary fuel source for endurance training. Low carb availability leads to early fatigue and performance drops.

• Main energy source for long sessions
• Stored as glycogen in muscles and liver
• Must be replenished regularly

2. Pre-Training Fueling

Eat 2–3 hours before training for optimal energy levels.

• Complex carbs (oats, rice, bread)
• Low fat & low fiber
• Moderate protein

3. Fueling During Long Sessions

Sessions longer than 90 minutes require additional fuel.

• 30–60g carbs per hour
• Gels, bananas, sports drinks
• Practice fueling during training

4. Post-Training Nutrition

Restore glycogen and prepare for the next session.

• Carbs + protein within 60 minutes
• Simple, easy-to-digest meals