Half Marathon Pace Calculator
Half Marathon Pace Calculator
Calculate pace, speed, splits, finish time and performance comparison for a half marathon race.
Pace From Time
Calculate your pace
Enter a distance and finish time to calculate min/km, min/mile, km/h and mph.
min/km
5:41
min/mile
9:09
km/h
10.55
mph
6.55
How to calculate Half Marathon pace
A half marathon race is 21.0975 kilometres. Enter your finish time to calculate pace per kilometre, pace per mile, km/h and mph.
Use the tabs above to switch between pace, finish time, splits and the comparison chart for the same race distance.
Half Marathon performance benchmarks
Compare your result with beginner, intermediate, advanced, elite and top-level benchmarks, then use the related guides to plan training and race-day pacing.
Methodology
How the Half Marathon calculator works
- The calculator converts 21.0975 kilometres into kilometres and miles, then divides finish time by distance to calculate pace.
- Speed values are calculated from distance over total time and displayed in km/h and mph.
- Split and comparison outputs use the same distance source so related calculator modes stay consistent.
Sources reviewed
- World Athletics half marathon men all-time list
- World Athletics half marathon women all-time list
- World Athletics all-time top lists - Primary source for official all-time performance lists where the event is covered.
- World Athletics 2025 scoring tables - Reference for comparing performances across events, not used as an official recreational standard.
- World Masters Athletics road age standards explanation - Background on age-grading concepts; PaceConverter age bands are simplified recreational ranges, not official WMA tables.
- RunRepeat State of Running report - Large recreational race-results report used as context for broad recreational distributions.
Last updated June 2, 2026 by the PaceConverter editorial team. Read the editorial policy.