CrushThisCourse: Race Strategy
Predict it. Plan it. Crush it.
About
This app helps you create and test race strategies for triathlons. It generates course-specific bike power plans and analyzes your goal splits against real finisher data to predict success. Coaches can also build and share athlete strategies.
What's New in CrushThisCourse
2.2.1
September 24, 2026
FIXED: 70.3 races now load the right swim, bike, and run splits. Some were getting stuck at full-distance minimums. YOUR EDITS STICK. Close the app, come back, and your splits are exactly where you left them instead of resetting to the race defaults. SAVED AND SHARED PLANS LOAD EXACTLY. Open any saved or shared plan, even while a different race distance is selected, and you get the splits that were saved. TOP 25% AND TOP 50% GOALS, FIXED. No more crash opening a saved plan with a percentage goal. Your goal now survives a restart, and it recalculates for your age group's field when you switch age groups. Switching races quickly on a slow connection no longer mixes in numbers from the race you just left. Bug fixes and polish.
MoreFAQ
What is IronSplit?
IronSplit is a free app designed to help triathletes create and pressure-test race strategies. It generates personalized bike power plans and analyzes your goal splits against extensive real-world data.
How does IronSplit use real data?
The app benchmarks your proposed race strategy against data from over 2.2 million real finisher results across more than 1,700 triathlons. This provides a data-backed assessment of your probability of success.
Can I export my bike plan?
Yes, IronSplit allows you to export your course-aware bike power plan as a .fit file. This file can be directly loaded onto compatible cycling computers like Garmin or Wahoo.
What triathlon distances does IronSplit support?
IronSplit supports all major triathlon distances, including Full, 70.3, Olympic, and Sprint. Whether you're a beginner or an experienced athlete, you can build a plan tailored to your race.
Is IronSplit suitable for coaches?
Yes, IronSplit includes features for coaches to build comprehensive race strategies and bike power plans for their athletes. These plans can be delivered instantly and athletes can export their own .fit files.
What devices is IronSplit available on?
IronSplit is available on iPhone, iPad, and iPod. It is rated for ages 4 and up.
How often is IronSplit updated?
The latest version, 2.0.1, was released on June 23, 2026. The app is actively maintained by developer Jamie McLaughlin.
Does IronSplit have ads?
No, IronSplit does not contain advertisements. It is a completely free application.
