Running Split Calculator
Build even, negative or positive split tables from race distance, finish time and split interval.
Enter or adjust the values above, then calculate.
Running Split: target Pace & Cumulative Splits
Build even, negative or positive split tables from race distance, finish time and split interval.
Inputs this tool uses
- Race distance
- Target finish time
- Split interval
- Strategy
What you get
Target split plan.
How to use the Running Split Calculator
- Enter race distance, target finish time, split interval and the other fields relevant to this calculation.
- Select any method, activity level or option shown on this page, then choose Calculate.
- Read the main result together with the supporting values, method, assumptions and limitations below before using the estimate.
How this calculation works
Pace, speed, time and distance are exact arithmetic conversions from the user-entered values.
Example calculation
The sample values loaded into the calculator produce 5.00 min/km. This example exists to show how the output is structured; replace the sample values with your own inputs for your calculation.
Assumptions and limitations
- Energy, fitness and heart-rate outputs are estimates and vary by individual and device.
- Stop exercise and seek appropriate care if you have concerning symptoms; this tool does not provide medical clearance.
Sources and review status
Source set last verified 2026-09-25. No clinician review is claimed unless a real named reviewer is displayed.
Connected tools
Continue with the closest related calculation without re-entering sensitive values automatically.
Calculate running pace per kilometre and mile, speed and common-distance equivalents from distance and elapsed time.
Open tool →♥Race Time PredictorPredict an equivalent race time with the Riegel equation and warn when extrapolation distances are far apart.
Open tool →♥Training Pace CalculatorEstimate training-pace ranges from a recent race performance using a named preset methodology, not a medical prescription.
Open tool →