Pace & splits

Running pace calculator for mile and kilometer splits.

Choose a 5K, 10K, half-marathon, or marathon goal time to calculate even pace per mile and kilometer, speed, and cumulative splits.

Your goal

Set the finish clock

Goal finish time

Splits assume perfectly even pacing. Courses, conditions, turns, hills, and GPS error will change real-world results.

Even-pace result

2:00 half marathon

Per mile9:09
Per kilometer5:41
Speed6.6 mph
Even-pace cumulative splits
MarkerElapsedRemaining

How it works

From finish time to usable pace.

Enter the race distance and the finish time you want to explore. The calculator divides that time evenly across the full distance, then builds cumulative checkpoints you can print or compare with a course plan.

  1. Choose a distance.Pick 5K, 10K, half marathon, or marathon.
  2. Enter a goal time.Use hours, minutes, and seconds; the result updates when you select Calculate pace.
  3. Read both units.See pace per mile, pace per kilometer, average speed, and cumulative splits.
  4. Adjust for reality.Use the even pace as a reference, then account for hills, weather, turns, aid stations, congestion, and GPS error.

Keep it grounded

A split is a reference, not a promise.

Use the table to understand the rhythm of a goal. Then adjust for the course profile, aid stations, weather, congestion, and the way you have actually trained.

Put the goal on a calendar →