Marathon Pace Calculator
Whether you are targeting a first finish or chasing a personal best, knowing your required pace is the foundation of a solid marathon race plan. A marathon covers exactly 26.2188 miles (42.195 kilometres), the distance set by World Athletics and used in every certified road marathon worldwide. This calculator works in two modes: enter a target finish time and get the required pace per mile and per kilometre, or enter a pace and get the predicted finish time. Either way, you receive a full split table at each 5K checkpoint, the 10K mark, and the half-marathon point at 13.1094 miles (21.0975 km). Splits are calculated on an even-pace strategy, meaning every kilometre is run at the same speed. Many coaches recommend targeting even splits as a baseline and adjusting for course elevation, weather, and personal fitness. This tool is used by recreational runners, coaches, and race planners as a starting point for marathon training and race-day pacing.
Required pace: -- /mile | -- /km
Split times
| Checkpoint | Distance | Split time | Cumulative time |
|---|---|---|---|
| Enter your target time above to see splits. | |||
Marathon pace formula
The relationship between pace, distance, and time is straightforward. Given a target finish time in total minutes:
Pace (min/mile) = Total time (min) / 26.2188
Pace (min/km) = Total time (min) / 42.195
Split at distance D = Pace * D
Worked example
Target finish: 4 hours 0 minutes (240 minutes total).
- Pace per mile = 240 / 26.2188 = 9 min 9 sec per mile
- Pace per km = 240 / 42.195 = 5 min 41 sec per km
- Half split (21.0975 km) = 240 / 2 = 2:00:00
- 10K split = 5.6909 * 10 = 56 min 54 sec
Marathon pace calculator: frequently asked questions
What is the official marathon distance?
A marathon is exactly 26.2188 miles (42.195 kilometres). This distance was standardised by the International Association of Athletics Federations (World Athletics) and has been the official race distance since the 1908 London Olympics.
How do I calculate my marathon pace?
Marathon pace is your target finish time divided by 26.2188 (miles) or 42.195 (kilometres). For example, a 4-hour marathon requires a pace of 4 * 60 / 26.2188 = 9 minutes and 9 seconds per mile, or 4 * 60 / 42.195 = 5 minutes and 41 seconds per kilometre.
What are even splits in marathon running?
Even splits means running each kilometre or mile at exactly the same pace throughout the race. Many coaches recommend negative splits, where the second half is slightly faster than the first half, as a more efficient strategy. The calculator shows even-split checkpoints as a baseline.
What is a good marathon finish time for a beginner?
A common beginner goal is finishing under 5 hours, which requires a pace of roughly 11 minutes 27 seconds per mile or 7 minutes 6 seconds per kilometre. The median marathon finish time for all runners in major races is approximately 4 hours 30 minutes.
How does this calculator handle the half-marathon split?
The half-marathon split is calculated at exactly 13.1094 miles (21.0975 km), which is half the official marathon distance. Under an even-split strategy, the half-marathon split is exactly half your total target finish time.
Official sources
- World Athletics technical rules (marathon distance): World Athletics.
- USA Track and Field road running standards: USATF Rules of Competition.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. General information only, not professional coaching advice.