Race Pace Calculator

Split your race into parts, called phases, and choose how to calculate your plan:

• Pace calculation: Enter your goal finish time. The calculator finds the pace for each phase. Lock a phase to keep its pace while the others change.
• Target calculation: Enter a pace for each phase to see the total finish time.

Add or remove phases and choose how much distance each one covers.

Example: finish the second half faster

A 50:00 goal for 10 km requires an average 5:00 min/km. A negative split means running the second half faster than the first. For example, run the first 5 km at 5:05 and the second 5 km at 4:55: 25:25 + 24:35 = 50:00.

The times add up, but that does not mean the goal is realistic or the strategy suits your race. A slower start can help you avoid running too hard early. Negative splits are one option, not a rule for every runner. This calculator does not account for fuel, heat, hills or tiredness late in a race.

To estimate paces from a recent race result or your activity data, use the Race Strategy Calculator. It lets you compare slower and faster paces for each phase.