HesapHanem

Marathon Pace Calculator

Find the pace you need for your goal marathon time.

Result

5:20 /km
8:35 /mi

How it is calculated

The goal time is converted to total minutes, T = hours × 60 + minutes, and divided by the distance: pace per km = T ÷ 42.195 and pace per mile = T ÷ 26.2188. The result is minutes per unit, split into whole minutes and seconds (the fraction × 60, rounded to the nearest second) and shown as m:ss. This is the average pace that finishes exactly on your goal time if held evenly from start to finish. Minutes above 59 are accepted (0 hours and 200 minutes works). Negative values, or a total of zero, give no result. The tool has no seconds field, so a goal such as 3:45:30 can only be approximated with decimal minutes.

Worked example

Goal time 3 hours 45 minutes. Total: 3 × 60 + 45 = 225 minutes. Per kilometre: 225 ÷ 42.195 = 5.3326 min, which is 5 minutes and 0.3326 × 60 = 19.96, rounded to 20 seconds. The pace is 5:20 /km. Per mile: 225 ÷ 26.2188 = 8.5815 min, that is 8 minutes and 0.5815 × 60 = 34.9, rounded to 35 seconds, so 8:35 /mi.

Try this example →

Common mistakes

  • Typing a decimal-hour time such as 3.45 into the hours box: 3.45 hours is not 3 h 45 min, because 0.45 h is 27 minutes. Put hours and minutes in their own fields.
  • Treating the result as a speed. It is minutes per kilometre, so a smaller number means faster running.
  • Running the first kilometres at exactly the goal pace and ignoring the rest of the course: the figure is an average, so hills and crowded starts need adjustments on top of it.
  • Mixing the kilometre and mile paces on a pace band. 5:20 /km and 8:35 /mi describe the same effort; use one unit consistently with your watch.
  • Expecting seconds to be entered. The goal time has hours and minutes only, so a time like 3:44:50 needs 44.83 minutes.

About this calculator

A marathon pace calculator converts a goal finish time for the 42.195 km (26.2 mile) marathon distance into the pace per kilometer and per mile you need to hold to hit that time, assuming an even-effort or negative-split strategy rather than starting fast and fading.

Runners and coaches use goal pace throughout marathon training, not just on race day: tempo runs, marathon-pace long runs, and race-day pace bands are all built around this single number, because running even slightly faster than goal pace early in a marathon reliably leads to a much larger slowdown later from glycogen depletion, a phenomenon runners call 'hitting the wall.'

This calculator takes your target finish time and returns the exact pace per kilometer and per mile, so you can write it on a pace band, program it into a GPS watch, or use it to check your split times against goal pace during training runs.

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