About PIRX
Your training has a number.
PIRX — Performance Intelligence Rx — turns the training you already do into one honest, accountable race-time projection, then tells you exactly which seconds came from where. No spreadsheets. No guessing. One number that updates every day.
The team behind the number
PIRX is built by the PIRX Performance Science Team — running performance scientists & data engineers — working alongside national-team athletes, coaches, and Olympians. We are runners building the tool we always wanted: one that respects your effort enough to tell you the truth about what it’s worth.
We’re proudly based in Canada, and we partner with the clubs, federations, and brands building the next generation of distance running.
What we believe
Projection-first
Every PIRX view starts from one number: the most accurate race-time projection we can build from your data — updated every day, not once a season.
Attributed to the second
Five performance drivers — Aerobic Base, Threshold, Speed, Economy, Consistency — each scored 0–100 and broken down to the second, so you know which seconds came from where.
Honest about uncertainty
We show a supported range, not a fake-precise single time. When your data can't support a claim, PIRX widens the range instead of guessing.
It never makes things up
Every insight cites your real projections, drivers, and readiness. No invented numbers, no generic advice you could get anywhere.
What PIRX will never do
- Sell or share your training and health data.
- Give medical advice or pretend to be a medical device.
- Show a confident number your data can't actually support.
- Lock your data in — you can export or delete everything, anytime.
See your number — free
Enter one recent race result and get your projected finish time in seconds. No account, no wearable required.