How Many Carbs Per Hour? Complete Endurance Fuel Guide | FTP Endurance Fuel
How Many Carbs Per Hour: Complete Guide for Running, Cycling, and Endurance Performance
Carbohydrate intake is one of the most important factors determining endurance performance. Consuming the right amount of carbs per hour helps maintain energy, delay fatigue, and sustain performance during long runs, rides, and races.
Without adequate carbohydrate intake, glycogen stores become depleted, leading to fatigue, reduced power output, and the experience commonly known as "hitting the wall."
Understanding how many carbs per hour you need allows you to fuel properly and perform at your best.
Why carbohydrates are essential for endurance athletes
Carbohydrates are the body’s primary fuel source during moderate and high intensity exercise. Your muscles rely on glycogen, which is stored carbohydrate, to produce energy.
However, glycogen stores are limited and typically last:
• 60–90 minutes at moderate intensity
• Less at higher intensity efforts
Once glycogen stores are depleted, performance declines rapidly unless carbohydrates are consumed during exercise.
Consuming carbohydrates during exercise helps maintain blood glucose levels, preserve glycogen stores, and sustain performance.
Recommended carbs per hour based on exercise duration
General endurance fuelling guidelines recommend:
Under 60 minutes
No carbohydrate intake required.
60–90 minutes
30–45 grams of carbs per hour.
90–150 minutes
45–60 grams of carbs per hour.
2.5–3+ hours
60–90 grams of carbs per hour.
Elite endurance athletes often consume up to 90 grams per hour to maximise performance.
These recommendations apply to running, cycling, triathlon, and other endurance sports.
Carbs per hour for running
Running places high demand on carbohydrate stores due to its weight-bearing nature and higher energy cost.
Recommended intake:
• Long runs over 90 minutes: 45–60g carbs per hour
• Marathon racing: 60–90g carbs per hour
Proper fuelling helps maintain pace and delay fatigue.
Carbs per hour for cycling
Cycling allows slightly higher carbohydrate intake due to lower impact and easier digestion.
Recommended intake:
• Endurance rides over 90 minutes: 60g carbs per hour
• Long rides and racing: 60–90g carbs per hour
Professional cyclists often target the upper end of this range.
Carbs per hour for triathlon
Triathlon combines swimming, cycling, and running, making consistent fuelling essential.
Recommended intake:
• Olympic distance: 30–60g carbs per hour
• Half Ironman and Ironman: 60–90g carbs per hour
Proper fuelling supports sustained performance across all disciplines.
Benefits of consuming the correct carbs per hour
Consistent carbohydrate intake helps:
• Maintain energy levels
• Delay fatigue
• Sustain power and pace
• Improve endurance performance
• Support faster recovery
• Improve training quality
Athletes who fuel properly can train harder and perform better.
Common mistakes athletes make
Many endurance athletes underfuel due to:
• Difficulty consuming fuel during exercise
• Poor taste or texture of products
• Inconvenient packaging
• Lack of structured fuelling strategy
Under-fuelling is one of the most common performance limiters.
How to implement a fuelling strategy
Start fuelling early rather than waiting until fatigue begins.
Consume carbohydrates regularly in small amounts every 15–20 minutes.
Practice fuelling during training to find what works best for your body.
Consistency is more important than consuming large amounts infrequently.
Choosing the right carbohydrate fuel
Effective fuelling products should be:
• Easy to consume during exercise
• Fast absorbing
• Easy to carry
• Consistent and reliable
• Easy on the stomach
FTP Endurance Fuel was designed specifically to provide reliable carbohydrate fuelling for endurance athletes without the downsides of traditional gels.
Fuel smarter without relying on gels.
Trusted by runners, cyclists, and endurance athletes.
