IRONMAN Michigan
IRONMAN 70.3 Michigan races out of Frankfort on 20 September 2026, with a 1.9 km swim in Betsie Bay, 90 km on flat countryside roads and a 21.1 km run back around the bay.
Betsie Bay is a sheltered inlet rather than Lake Michigan itself, so the swim is calm and easy to sight even when it is blowing outside the harbour mouth. Late September water this far north is cold, and that is the part to prepare for rather than the chop.
The bike is genuinely flat farmland. It is a fast course, and it is also a course where a north-westerly off the lake decides your split for you.
Frankfort is a town of a few thousand people hosting a full-scale race. That is most of its appeal and all of its logistics problem: local beds sell out a long way out, and the alternative is a drive in from Traverse City on race morning.
Who it's for
Built for experienced triathlon athletes.
Good fit if you…
- are experienced in triathlon and want a hard race
- want a well-known, high-status race
Maybe not if you…
- are brand-new to triathlon: start with something shorter
What should you know about IRONMAN Michigan?
- Date
- Sunday, 20 September 2026
- Format
- Half / 70.3
- Water temp
- 17.1°C · 63°F
Need to know
When is IRONMAN Michigan 2026?
IRONMAN Michigan takes place on Sunday, 20 September 2026. Dates can move year to year, so confirm the exact day on the official race page before you book travel.
How do you register for IRONMAN Michigan?
Where does IRONMAN Michigan take place?
Frankfort, United States
FAQs
What do athletes ask about IRONMAN Michigan?
Where is IRONMAN Michigan held?
IRONMAN Michigan is held in Frankfort, the United States. The race page has the venue location and a map, and links straight through to the official site for the precise start area.
What distances can you race at IRONMAN Michigan?
IRONMAN Michigan offers Half / 70.3. The Half / 70.3 is a 1.9 km swim, 90 km bike and 21.1 km run. Pick your distance and enter on the official site. Each format usually has its own start wave and cut-offs.
How hard is IRONMAN Michigan?
IRONMAN Michigan is rated competitive (4/5) for difficulty on FindMyNextRace, based on its distance, terrain, and the level of the field. Use that as a guide and match it to your current fitness before you commit.
What's the water temperature at IRONMAN Michigan?
The swim at IRONMAN Michigan is around 17.1°C (63°F), based on the official average for the venue. Water temperature drives wetsuit rules, so check the organiser's current wetsuit policy before race day.
How do I enter IRONMAN Michigan?
You enter IRONMAN Michigan through the official organiser. Registration is handled on their site, and FindMyNextRace links you straight there. Places for popular editions can sell out early, so register as soon as entry opens.
Is IRONMAN Michigan part of a race series?
Yes, IRONMAN Michigan is part of the IRONMAN series. Series events often share a qualification, points, or championship pathway, so if you're chasing the series, check how this race fits its calendar.
How should I train for IRONMAN Michigan?
Training for IRONMAN Michigan depends on your target distance and current fitness. Most athletes follow a structured block of 12–20 weeks for a Half / 70.3 effort. Build a plan tailored to your race date and level with AI Training Plan (https://aitrainingplan.app).
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