Marathon Pace Calculator

Turn a goal time for a 5K, 10K, half marathon, marathon or custom distance into the pace per mile and per kilometer you need, with mile or 5K splits and your average speed. Example: a 4:00:00 marathon needs a pace of 9:09 per mile (5:41 per km).

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Race distance

Custom distance in km (used only if Custom)

Goal time: hours

Goal time: minutes

Goal time: seconds

How to use the Marathon Pace Calculator

Enter the values in the fields.
Press Calculate to see the result with the steps shown.

Formula and method

Pace per km = total time / distance (km). Pace per mile = pace per km x 1.609344. Speed (mph) = miles / hours. Split time at distance d = pace x d.

Marathon pace chart

Finish time	Pace per mile	Pace per km
3:00:00	6:52	4:16
3:30:00	8:01	4:59
4:00:00	9:09	5:41
4:30:00	10:18	6:24
5:00:00	11:27	7:07
6:00:00	13:44	8:32

Half marathon pace chart

Finish time	Pace per mile	Pace per km
1:30:00	6:52	4:16
1:45:00	8:01	4:59
2:00:00	9:09	5:41
2:15:00	10:18	6:24
2:30:00	11:27	7:07

Race distances

5K is 3.107 miles, 10K is 6.214 miles, a half marathon is 13.109 miles (21.0975 km) and a marathon is 26.219 miles (42.195 km).

Pacing tips

Start the first miles at or slightly slower than goal pace, fuel early, and use the splits table to check yourself at each marker.

Frequently asked questions

What pace do I need for a 4-hour marathon?

About 9:09 per mile or 5:41 per kilometer.

What is a good marathon pace?

The median marathon finish is about 4:30, which is roughly a 10:18 mile pace, but a good pace depends on your fitness.

How do I calculate pace per mile?

Divide your total time by the distance in miles.

What is a negative split?

Running the second half faster than the first.

How do I convert pace per km to per mile?

Multiply by 1.609.

Can I use this for walking?

Yes. Enter any distance and time.

Sources

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Effortless Math Team

4 minutes ago