Free tool
Pace calculator
Work out your pace per km or per mile, your finish time and your splits, for any distance from 5K to the marathon.
I KNOW MY
DISTANCE
km
UNITS
FINISH TIME
hours
:
minutes
:
seconds
Now find the race to run it in
7 questions, about a minute
Not sure what time to aim for?
The race predictor works it out from a recent race
Your splits
A negative split means running the second half faster than the first. These splits start about 1.5% slower than your average pace and finish about 1.5% faster, for the same finish time.
Half marathon pace chart
Common finish times and the pace you need to hold.
How to use your pace
Your average pace is the time it takes you to cover one kilometre or one mile. To finish a half marathon in 2 hours, you need to average about 5:41 per km, or 9:09 per mile.
Most runners do best starting a few seconds per km slower than goal pace, then speeding up in the second half. Use the splits table as a guide, not a rule: hills, heat and crowds all change how fast a kilometre feels.