Triathlon Split Times Calculator

Work out triathlon split times instantly with clear inputs, formula shown and shareable results.

About Triathlon Split Times Calculator

A triathlon result is the sum of three legs plus both transitions, which are timed and often decide close races. An Olympic-distance split of 30, 75 and 50 minutes with 4 minutes of transitions totals 2:39:00, with the bike accounting for 47% of the time - which is why bike fitness usually gives the largest return on training.

Formulas

Total time

total = swim + T1 + bike + T2 + run

Leg share

share = leg time / total time

Worked example

With the default values below, Triathlon Split Times Calculator returns Total Race Time of 159.0. Change any input above and every figure here is recalculated in your browser.

Inputs used

Swim timeminimum 0 min: 30 min
Bike timeminimum 0 min: 75 min
Run timeminimum 0 min: 50 min
Total transition timeminimum 0 min: 4 min

Results

Total Race Time: 159.0 min
Total As h:mm:ss: 2:39:00
Share Of Time On The Bike: 47.2%
Share Lost In Transition: 2.52%

Step by step

1Values used
2Total time
3Leg share
4Total Race Time= 159.0 min
5Total As h:mm:ss= 2:39:00
6Share Of Time On The Bike= 47.2
7Share Lost In Transition= 2.52

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.
This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.

Frequently Asked Questions

How much time can transitions cost?

Two to five minutes for age-group athletes and under a minute for professionals. It is often the cheapest place to find time.

Which leg should I prioritise?

The bike takes the most time, but the run decides most races because it is where fatigue from the first two legs shows.