Race Strategy Calculator
Use a recent result to compare slower and faster paces for each part of your race
Enter a recent race result above to build your pacing strategy.
How it works
Enter a recent race result, or sign in to use the fitness estimate from your latest uploaded activity. The Daniels-Gilbert formula uses that score to estimate a pace for your chosen race distance, as in the Race Time Predictor. The calculator calls this starting pace optimal. That label does not prove it is the best pace or strategy for you.
The pace options are called regimes. Conservative is 4% slower than the starting pace; slightly conservative is 2% slower. Slightly aggressive is 2% faster; aggressive is 4% faster.
Choose a preset or divide the race into your own phases. Set each phase's distance share so they total 100%, then choose a pace option for each one. The estimated finish time updates as you change the plan. For workout paces, use the Training Pace Calculator.
Example: compare slower and faster paces
If the estimated race pace is 5:00 min/km, 4% slower is 5:12, and 4% faster is 4:48. These are planning choices, not your chances of success.
The model does not account for your fuel, hills or tiredness late in a race. Estimates for 50 km and 100 km can be too optimistic.
To find splits that add up to a goal finish time, use the Race Pace Calculator. To convert between distance, time and pace, use the Running Pace Calculator.
Want these numbers from your own data?
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