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Pace Calculator

Calculate running pace, finish time, or distance.

Three ways to use the pace calculator

  • Calculate pace — know your distance and finish time; find your average pace per km or mile.
  • Calculate time — know your target distance and goal pace; find your expected finish time.
  • Calculate distance — know how long you ran and your average pace; find the total distance covered.

Common race target paces

  • 5K in 25 min: 5:00/km pace
  • 5K in 30 min: 6:00/km pace
  • 10K in 1 hour: 6:00/km pace
  • Half marathon in 2 hours: 5:41/km pace
  • Marathon in 4 hours: 5:41/km pace
  • Marathon in 3:30: 4:58/km pace

Tips for pacing your race

  • Negative split: Run the second half slightly faster than the first. Most PBs are set this way.
  • Don’t go out too fast — starting 10–15 seconds per km too fast in the first 2 km often leads to a significant slowdown in the final km.
  • Use the splits table — print or screenshot your target split times for each km to guide your race.

Frequently asked questions

What is running pace?
Running pace is the time it takes to cover one unit of distance (typically one kilometre or one mile). It is expressed as minutes:seconds per km or per mile. A pace of 5:30/km means it takes 5 minutes and 30 seconds to run each kilometre.
How do I calculate my pace?
Pace = Total Time ÷ Distance. If you ran 10 km in 55 minutes, your pace is 55 ÷ 10 = 5.5 minutes per km, which is 5:30/km. Use this calculator by selecting 'Calculate pace', entering your distance and time.
What is a good running pace for beginners?
For beginners, a comfortable conversational pace of 7:00–9:00 min/km (11:15–14:30 min/mile) is ideal. This lets you build aerobic base without overexertion. For a 5K, beginner finish times of 35–45 minutes are common. As fitness improves, many runners target sub-30 minutes for 5K (6:00/km pace).
How do I convert pace from km to miles?
To convert pace from min/km to min/mile, multiply by 1.60934. For example, 5:00/km × 1.60934 ≈ 8:03/mile. To convert from min/mile to min/km, multiply by 0.62137. This calculator handles the conversion automatically — just toggle the unit.
What pace do I need to run a sub-4-hour marathon?
A sub-4-hour marathon requires completing 42.195 km in under 240 minutes, which works out to 5:41/km (9:09/mile). Use the 'Calculate pace' mode in this tool with distance 42.195 km and time 3:59:59 to verify.

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