Race Pace Calculator
Pace, time, or
splits — solved
Enter any two of distance, time, or pace, and get the third plus a full mile-by-mile split table.
Notes
🏃Splits assume even pacing. Real race strategy often varies pace (negative splits, holding back early) — use this as your baseline target, not a rigid rule.
📋Official race distances are 3.1 miles (5K), 6.2 miles (10K), 13.1 miles (half marathon), and 26.2 miles (marathon) — the presets use the exact certified distances.