How do I convert km pace to mile pace?

Multiply your per-kilometre pace by 1.609. A 5:00/km pace is about 8:03/mile.

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

Roughly 5:41/km (9:09/mile) for the full 42.2 km. Enter 42.2 km and 4:00:00 here to check any finish-time target.

Running Pace Calculator

Calculate running pace, speed, and finish time from distance and time.

UPDATED · MAY 2026

Distance

Time

hours · minutes · seconds

Your pace

5:00/km

PACE /KM5:00

PACE /MI8:03

SPEED12.0 km/h

Pace /km

5:00

Pace /mi

8:03

Speed

12.0 km/h

How to use the Running Pace Calculator

01
Enter the distance. Type the distance and choose kilometres or miles.
02
Enter your time. Hours, minutes, and seconds for the run.
03
Read your pace and speed. Pace per km and per mile, plus speed.

How is it calculated?

Pace is time divided by distance. We convert your distance to kilometres, divide the total seconds by it to get seconds per kilometre, then convert to per-mile (× 1.609) and to speed (distance ÷ hours). Pace is shown as minutes:seconds.

Frequently asked

The questions readers ask most about the running pace calculator.

Pace is time per unit distance (e.g. 5:00 per km) — lower is faster. Speed is distance per unit time (e.g. 12 km/h) — higher is faster. They're inverses of each other.

How to use the Running Pace Calculator

How is it calculated?

Frequently asked

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