Marathon Pace Calculator

Calculate the pace and speed needed to finish a marathon (42.195 km) in a target time.

  • Free to use
  • Accurate results
  • No registration required
  • Works on all devices
Enter a target finish time to calculate the pace needed for a marathon (42.195 km).

Your result

5:41

Pace (min/km)

Pace (min/mile)9:09
Speed10.55 km/h

AI explanation

Formula

Pace = target time / 42.195 km

Worked example

4:00:00 target time

Worked example: 4:00:00 target time
FieldValue
Hours4
Minutes0
Seconds0
Pace (min/km)5:41

Assumptions

  • Uses the standard marathon distance of 42.195 km (26.2 miles).
  • Assumes an even, constant pace across the full race — actual pacing strategies vary.
  • Informational only.

Frequently asked questions

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

A 4:00:00 marathon requires an average pace of about 5:41 per km (9:09 per mile).

What's the official marathon distance?

42.195 kilometers (26.2188 miles), standardized since the 1908 London Olympics course.

How do I pace a marathon if I want to negative split?

A negative split means running the second half faster than the first — start a bit slower than your target average pace and gradually increase, rather than starting fast and fading.

Related calculators

Half Marathon Pace CalculatorRace Time Predictor

This calculator provides a general estimate only.

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