IRONMAN 70.3 Michigan · FrankfortVerified
IRONMAN 70.3 Michigan · Frankfort: 90 km bike leg, 291 m of climbing. Elevation profile, what the terrain asks of you, the weather this race day usually brings, and how to pace this course.
Course intel
Lake Michigan shoreline hills, 358 m of elevation gain, mostly gentle climbs. September in the Great Lakes region is cool and comfortable.
Source: Compiled from the official route and public race information · every course rechecked before launch
The terrain on this course
- Flat (±1.2%) makes up 83%
- Main climb 87.0–87.7 km: 30 m of gain (avg 4.6%)
Speed score
The wind here is part of the terrain: ride the headwind sections to your range, not to the speedometer, and in crosswinds relax your upper body and stay low. The plan already has wind in every segment, so just ride the numbers.
Historical race-day weather (around 09-20): 16.8°C · Wind 3.3 m/s
0 to 100, and the higher it is the easier it is to post a good time. Points come off for terrain, for corners, and for the heat and wind this race has actually had over the last five years at the same time of year. Full explanation in the article “How the course score works”.