Build your race strategy
Choose your race, goal finish time and pacing strategy. Your splits are calculated from a continuous pace curve and add up to your exact goal time.
| Checkpoint | Segment | Segment time | Cumulative time |
|---|
How the calculations work
Even pacing uses constant time per distance. For a negative or positive strategy, the planner applies a linear pace-per-distance curve across the race. For goal time T, race distance D, and distance covered x, the elapsed time is t(x) = T × [x/D + s × (x/D − (x/D)²)], where s controls pacing (positive = faster second half). This guarantees t(0) = 0 and t(D) = T, and positive pacing throughout the available strategy range.
Split times are differences between successive cumulative targets, rounded to the nearest second for display. The final segment may be shorter than a full mile or kilometer. Exact distance conversions use 1 mile = 1.609344 kilometers.
These are mathematically consistent pacing targets, not predictions of what an athlete can achieve. Terrain, wind, crowds and individual race tactics may call for effort-based adjustments.