Race Pace Calculator
Find the pace you need for your target time — or the finish time for a given pace. For 5K, 10K, half marathon, marathon or any distance you choose.
10K in 1:00:00
Target Pace 6:00 /km
How it works
Enter a distance and target time to get your pace, or work the other way round. For example, 10K in 45:00 → 4:30/km. Custom accepts any distance in km, and the result updates as you type.
What to keep in mind
The calculation assumes an even pace throughout. It does not predict performance or account for course profile, weather, fuelling or race fatigue. For a prediction, use the Race Predictor; for elevation changes, use GAP. To divide your time into splits, use the Split Calculator.
Methodology & sources
Calculation: direct division of time and distance, with no intermediate rounding. Distances: 5K and 10K use whole kilometres. Half marathon (21.0975 km) and marathon (42.195 km) follow World Athletics standards. Display: rounded to the nearest second.
Last updated: 1 August 2026
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Realistic race pace: how to choose your race paceRELATED CALCULATORS
Split CalculatorRace PredictorPace Chart CalculatorCalculating race pace is the easy part.
The calculator tells you the pace your goal requires. It cannot tell you whether that goal is realistic or how to get there. That is what we build together.