Half Marathon Fueling Intervals Calculator

Calculate whether fueling (gels or sports drink) is needed during a half marathon based on pace, estimated finish time, and glycogen stores, with timing recommendations

Each component has a specific meaning:

• Pace — The pace recorded for the scenario being assessed.
• Estimated finish time — The estimated finish time recorded for the scenario being assessed.
• Glycogen stores — The glycogen stores recorded for the scenario being assessed.

Note: Interpret the half marathon fuel result against the thresholds and context described above.

Enter the pace, estimated finish time, glycogen stores for the scenario you are assessing. Calculate whether fueling (gels or sports drink) is needed during a half marathon based on pace, estimated finish time, and glycogen stores, with timing recommendations. Use the half marathon fuel result to inform your calculation.