Marathon Pace Calculator — Finish Time & km Splits
Calculate marathon pace or finish time over 42.2 km. Plan even marathon pacing with per-kilometre splits from your goal time.
Use the full Running Pace Calculator — km, Miles & Finish Time to enter custom values.
Distance is fixed to the standard marathon distance (42.195 km). Enter your target finish time or desired pace to calculate the other value and see kilometre splits.
Popular goal times: 4 hour marathon, 4:30 marathon, sub-3 marathon, and 5 hour marathon.
Even marathon pacing is a strong starting point, but course profile matters — hilly routes and heat often need slower early kilometres. Compare marathon course profiles on Marathon Focus to see elevation and route detail before you lock in a goal.
Use the pace converter if your training plan lists mile splits but the race is marked in kilometres.
To estimate whether your goal is realistic, try the marathon race time predictor with a recent half marathon or 10K result.
Frequently asked questions
- How do I calculate running pace per km?
- Divide your finish time in minutes by the distance in kilometres. For example, a 50-minute 10K is 50 ÷ 10 = 5:00 per km. Enter distance and time in the pace calculator and it works out pace, finish time, or distance from any two values.
- How do I convert mile pace to km pace?
- Use the pace converter to switch between min/mile and min/km instantly — it also shows speed in km/h and mph. For a quick estimate, multiply your per-mile pace by 0.621371 to get an approximate per-km equivalent.
- What is the formula for running pace?
- Pace = time ÷ distance. If you know your target pace and race distance, multiply pace by distance to estimate finish time. If you know time and distance, divide time by distance to get average pace.
- How do I plan even splits for a race?
- Enter your race distance and target finish time or pace. The calculator shows kilometre splits — cumulative times at each km — so you can check whether you are on track during the race.
Related calculators
Other tools that pair well with this calculator.
Free pace converter for runners. Convert min/km to min/mile, mile pace to km pace, and running speed in km/h or mph for treadmill and track workouts.
Free marathon time calculator and race predictor. Estimate 5K, 10K, half marathon, and marathon finish times from a recent race using Riegel's formula.
Convert running distances between kilometres and miles. Quickly switch 5K, 10K, half marathon, and marathon distances between metric and imperial.