Pace Half Marathon Calculator

Gait speed reports metres per second over a short measured walkway.
Course distance in kilometres.
Alternative to kilometres. Ignored when a kilometre distance is given.
Elapsed time in seconds.
Alternative to seconds, e.g. 3:30:00 or 25:00.
Seconds per kilometre. Needed when solving for time or distance.
Alternative to seconds per kilometre, e.g. 5:00.
Distance between rows of the split table. 0 suppresses the table.
Finish time
6,962.175 s
Running Pace Calculator
Pace
330 s/km
Pace per mile
531.08352 s/mi
Pace per kilometre
5:30 /km
Pace per mile
8:51.08 /mi
Average speed
10.909091 km/h
Average speed
6.778595 mph
Speed
3.030303 m/s
Finish time
1:56:02.18
Distance
21.0975 km
Distance
13.109379 mi
Splits shown
0
Worked out from OpenStax Elementary Algebra 2e, proportional relationships (rate = quantity per unit) and 2 other sources.

How this is worked out

5 steps
  1. Distance = 21.0975 km (13.1094 miles).
  2. Elapsed time = 6962.175 s (1:56:02.18).
  3. Pace = time / distance = 6962.175 / 21.0975 = 330 s per km.
  4. Pace per mile = 330 x 1.609344 = 531.084 s.
  5. Speed = distance / hours = 21.0975 / (6962.175 / 3600) = 10.9091 km/h.

Results are general information, not financial, tax, legal, medical or engineering advice.