CrushThisCourse
New: Face Offs. Pick a rival and see who wins. See how it works →
IronSplit is now CrushThisCourse. Same app, same account, new name.

Your race-day command center

Your goal isn't a wish.
It's a plan.

See exactly where you would finish. Set your swim, bike, and run splits and pressure-test your placing goal against real finisher data, then share the plan with your coach to lock it in for race week.

Premium · Bike Power Plan

Ride your race on the optimal plan.

A course-specific power plan: the exact watts to hold on every climb, descent, and flat for the race you picked. Built on a real model of your numbers, it estimates the minutes you save versus riding a steady target. First plan is free.

  • Watts for every climb, descent, and flat

    Not a single flat target. A course-specific plan computed for the exact race you picked.

  • Built on a real model

    FTP or critical power, W', CdA, Crr, rider and bike mass, and riding position: the dials you already tune.

  • See the minutes you save

    It estimates how much time the plan saves versus riding a steady target, the whole edge of pacing to the course.

See plans and pricing

Power Plan

Example

0 km45 km90 km
Target wattsCourse elevationDeeper orange = harder effort

Now live · Face Offs

Pick a rival. See who wins.

A real race, a real rival, a real result. Not a guess, not vibes: the same finisher data that powers every prediction in the app, now head to head.

  • Challenge someone real

    Search the actual finisher database, 2.3 million results and counting, or challenge a friend racing the same event.

  • Or build your own rival

    No real opponent in mind? Make one up. Set the splits you want to beat and race against them instead.

  • See who wins, leg by leg

    Not just a final time. Swim, T1, bike, T2, run: exactly where you gained and where you gave it back.

See Face Offs

Backed by real results

310+
Triathlons in the catalog

Full, 70.3, Olympic, and Sprint

2.2M+
Finisher results analyzed

Real times and placings, not estimates

2002 to 2026
Two decades of racing

Depth that survives any single season

From a finish you want to a plan you can execute

01

Pick your race and age group

Choose from the catalog and lock in the field you're actually racing against.

02

Set your splits

Dial in swim, T1, bike, T2, and run. Adjust until the plan feels real.

03

Pressure-test and share

See your odds against real finisher data, then send the plan to your crew.

Built for coaches

Share the plan, not a screenshot

Send a strategy as a link to a coach, a training partner, or your athlete. It opens on any device with the full finish projection and split-by-split ranking. Coaches can put their name on it.

Download on the App StoreGet it on Google Play