m:ss, for example 1:45
Converted
8:51 per mile
Half run at this pace: 1:56:03.
- Per km
- 5:30
- Per mile
- 8:51
- Speed
- 10.91 km/h
- Sprint run, 5 km
- 27:30
- Olympic run, 10 km
- 55:00
- Half run, 21.1 km
- 1:56:03
- Full run, 42.2 km
- 3:52:06
Pace converter
Pick a sport, enter a pace or speed, and get it in the other unit plus the leg time at Sprint, Olympic, Half and Full distance.
How it works
How the conversion works
Everything is converted through speed in metres per second, so the three sports use one method. A mile is exactly 1.609344 km and a yard exactly 0.9144 m, so 100 yd is 91.44 m. That makes a swim pace per 100 yd about 8.6 percent faster on the clock than the same swim per 100 m, and a pace per mile about 1.61 times the pace per km.
Bike speed converts between km/h and mph the same way: 1 mph is 1.609 km/h. Leg time is the leg distance divided by that speed.
The race distances
Sprint is 750 m, 20 km and 5 km. Olympic is 1.5 km, 40 km and 10 km. Half is 1.9 km, 90 km and 21.1 km. Full is 3.8 km, 180 km and 42.2 km.
Real courses vary by a few percent and a leg time at a steady pace ignores hills, wind and fatigue, so treat the times as a starting point. For a full race estimate with transitions, use the race time calculator. Planning how much to eat at that speed? See the nutrition calculator.
Sources
- International yard and pound agreement, 1959: 1 yard = 0.9144 m, hence 1 mile = 1.609344 km.
- Race distances: the standard Sprint, Olympic, Half and Full lengths used by World Triathlon and IRONMAN event organisers.
Questions
How do I convert swim pace per 100 m to per 100 yd?
Multiply the time per 100 m by 0.9144. A pace of 1:45 per 100 m is about 1:36 per 100 yd. Going the other way, divide by 0.9144.
How do I convert min/km to min/mile?
Multiply the pace by 1.609344. A 5:30 per km pace is about 8:51 per mile. To go from per mile to per km, divide by 1.609344.
How do I convert km/h to mph?
Divide by 1.609344. A bike speed of 32 km/h is about 19.9 mph. To go from mph to km/h, multiply by 1.609344.
What bike speed finishes a Half distance bike leg in under three hours?
The Half bike leg is 90 km, so you need an average of 30 km/h, or 18.6 mph, to ride it in exactly three hours.
What run pace is a four hour marathon?
A marathon is 42.2 km, so four hours is about 5:41 per km, or 9:09 per mile. In a triathlon you will run slower than your standalone marathon pace, so plan for it.