Swimrun Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Swimrun legs
m
:/100 m
km
:/km
m
:/100 m
km
:/km
Result
Add legs with a distance and a pace/speed to see your total time.
Estimate only — real results depend on terrain, weather, fatigue, transitions and conditions. Not medical or coaching advice.
How to use this calculator
- Add each swim and run leg with its distance and pace.
- Read the total time and per-leg splits.
How it works
Each leg is timed from its distance and pace; swimrun alternates many swim and run legs. The total is the sum of every leg.
Worked example
Swimrun. Alternating ~300 m swims and ~1.7 km runs, summed into one finish time.
Tips
- Times are estimates only — not medical or coaching advice. Always train safely and follow event rules.
- Distances are editable: choose “Custom…” to enter your own course lengths.
Frequently asked questions
Can I add as many legs as I want?
Yes — add or remove legs freely; each can be swim, run or any other type.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.