Home/Race predictor
The tool · Free

Predict your finish

The Unbroken Protocol app's race prediction engine, on the web. Enter the numbers you know, leave blank what you do not, and get a finish window with per-leg splits for sprint, Olympic, 70.3 or Ironman.

Sixty seconds Your numbers, your window No signup
The model

How the prediction works

This is the same engine the Unbroken Protocol app runs. Your swim comes from CSS with an open-water adjustment. Your bike comes from FTP and weight, held at the fraction of threshold each distance allows, from 92% for a sprint down to 75% for an Ironman. Your run comes from threshold pace with the degradation that racing off the bike really costs, and the course profile taxes both. Transitions are counted, because free minutes live there too.

The result is a window, not a single number, and its width is honest: every real number you enter narrows it, every blank widens it. If the window surprises you, that is information. The gap between the two ends is mostly decided by how you train, and that is exactly what the recovery-led system is for.

Questions

The predictor, answered

How accurate is the race time predictor?
It is the same engine the Unbroken Protocol app uses: your swim CSS, bike FTP and run threshold pace, adjusted for race distance, course profile and transitions. The result is a window, not a promise, and the more of your own numbers you enter, the tighter the window gets. Race-day execution, conditions and fuelling still decide where in the window you land.
What is CSS and how do I find it?
Critical Swim Speed is the pace per 100m you could sustain for a long, hard swim. A common test is a 400m and a 200m time trial: CSS pace per 100m is roughly (T400 minus T200) divided by 2. If you do not know it, leave it blank and the predictor uses a typical age-grouper default.
What if I do not know my FTP or threshold pace?
Leave them blank. The predictor fills gaps with typical age-group values and tells you how confident the result is. Any field you fill with a real tested number narrows the prediction. The app can establish all three through its R.A.C.E. score tests.
One System

Now train toward it

A prediction is a mirror. The system is what changes the reflection.

The Plans
Distance training plans
Sprint, Olympic, 70.3 and Ironman, the recovery-led way.
The App
Your Protocol Score
Tests your CSS, FTP and threshold, then updates this prediction as you train.
The Club
Unbroken Triathlon Club
Every distance, one system, out of NW10, London.

The number is the start line

Train the recovery-led way and make today's prediction next season's warm-up.

Train to beat it See the R.A.C.E. Framework