Running Pace Calculator

Calculate pace from distance and time, or estimate finish time from pace.

Category: Life Tools

When to use?

Use it to set a target pace for 5K, 10K, half marathon, or marathon training.

How to use

  • Use time-to-pace mode with distance and finish time.
  • Or use pace-to-time mode with target pace.
  • Check speed and race estimates.

Input Explanation

Enter distance, total time, or pace in min:sec per km depending on the mode.

Calculation Basis

Pace = total seconds ÷ distance. Speed = 3600 ÷ pace seconds. Finish time = pace × race distance.

Usage Examples

  • Analyze training - Convert recent runs into pace and speed.
  • Race target planning - Estimate finish times at a target pace.
  • Compare distances - See 5K, 10K, half, and full marathon estimates.

Examples

  • 10 km in 55 min → 5:30/km
  • 6:00/km pace → marathon about 4:13:10

Cautions

  • This is an estimate for everyday planning. Actual results can vary by environment, product specifications, personal condition, and local rules.

Guides

Pace and speed

Pace is time per kilometer; speed is distance per hour. Lower pace means faster running.

Race-time estimate

Finish time estimates assume you hold the same pace throughout the race, but fatigue, course, and weather can change actual results.

FAQ

What is pace?

Pace is the time needed to run 1 km.

Can actual race time differ?

Yes, terrain, weather, and fatigue can change real performance.

Can I find pace from a target finish time?

Yes, enter distance and target finish time in time-to-pace mode.

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