Runners, cyclists, and treadmill users constantly bounce between two ways of describing motion:

  • pace, such as 8:00 per mile
  • speed, such as 7.5 mph

Add kilometers into the mix and it gets even messier.

If you want the raw conversion tools, use miles to km, kilometers to miles, MPH to KPH, or the full speed converter.

Pace vs Speed

They describe the same thing from opposite directions:

  • speed tells you how much distance you cover over time
  • pace tells you how much time you take to cover a distance

Higher speed means lower pace. Lower speed means higher pace.

Useful Benchmark Conversions

PaceMPHKPH
10:00 / mile6.09.66
9:00 / mile6.6710.73
8:00 / mile7.512.07
7:30 / mile8.012.87
7:00 / mile8.5713.79
6:00 / mile10.016.09

Kilometer Pace Reference

PaceMPHKPH
6:00 / km6.2110.0
5:30 / km6.7810.91
5:00 / km7.4612.0
4:30 / km8.2813.33
4:00 / km9.3215.0

Example: 8:00 per Mile to MPH

If you run one mile in 8 minutes, then in one hour you could run:

60 ÷ 8 = 7.5 miles

So:

8:00 per mile = 7.5 mph

Example: 5:00 per km to KPH

If you run one kilometer in 5 minutes, then in one hour you could run:

60 ÷ 5 = 12 kilometers

So:

5:00 per km = 12 kph

Common Race Distances

These are frequent mile-to-kilometer lookups:

  • 5K = 3.1069 miles
  • 10K = 6.2137 miles
  • half marathon = 21.0975 km = 13.1094 miles
  • marathon = 42.195 km = 26.2188 miles

You already cover the most common one directly with 26.2 miles to km.

Why This Matters on Treadmills

Many treadmills in the US show mph, while many training plans are written in pace. If your plan says:

  • run 8:00/mile

you need to set the treadmill to:

  • 7.5 mph

Likewise, if a treadmill shows 12 kph, that is roughly:

  • 7:59 per mile
  • 5:00 per km

The Quick Rule

  • To get speed from pace, divide 60 by the pace in minutes.
  • To move between mph and kph, use MPH to KPH or remember that 1 mph = 1.6093 kph.

For exact race-distance and training conversions, use speed, time, and miles to kilometers.