IRONMAN 70.3 Ohio 2027
A swim that starts by jumping off the Kelleys Island ferry, a flat 56 miles through Ohio farmland, and a two-lap run through downtown Sandusky.
2027 edition completed
This record covers the 18 July 2027 edition of IRONMAN 70.3 Ohio in Sandusky, Ohio, USA, with a 1.9 km swim, a 90.1 km bike and a 21.1 km run. This date belongs to a completed edition. The course record remains available. Course descriptions and coaching notes are archived context for this edition. Check the organiser for a future edition once its date and entry details are published.
39 weeks to race day: base season
Plenty of runway. This far out, the win is a boring, consistent base rhythm: aerobic volume, strength, technique. The structured block starts closer in; what you do now decides how high it can climb.
Building for this one? 70.3 training plan covers the sessions, the weekly shape and how the block is paced. The R.A.C.E. Framework explains why it is built that way.
Build my complete road.
Commit to the date and the work gets a shape: your countdown starts, the emails arrive in step with your build, and the app anchors a recovery-led block so the final week lands exactly on race day.
One confirmation email, then the road begins. Registering for the race itself stays with the organiser.
“You start by jumping off the back of a ferry, which is worth knowing in advance rather than discovering at six in the morning. After that it is a flat, honest, fast course.”
The race
The course
No course maps for this race. IRONMAN publishes no downloadable route for any leg of this race, so there is nothing to draw a course map from. Everything below comes from the official course page, checked on the date at the foot of this section.
One loop in a protected section of Sandusky Bay, and the start is unlike anything else on the calendar: a rolling self-seeded start where you jump feet first off the lowered ramp of the Kelleys Island ferry. You walk about 150 yards from transition at Paper District Marina to the start by Jackson Street Pier, and finish back at the marina.
One loop out of the city limits and onto rural roads through Erie and Sandusky county farmland, with about 820 feet of climbing across the whole leg, which makes it a flat course by any normal measure.
Two loops from Paper District Marina through downtown Sandusky, flat and fast with under 130 feet of elevation gain, and easy for spectators to move around.
Not yet confirmed for this edition: run elevation gain figure, transition detail, cut-off times, water temperature history. We publish these only once they are on the official course page, so check there before you pace off anything here.
Course details verified against the official IRONMAN 70.3 Ohio course page on 14 August 2026. Courses change; the official page is always the last word.
Questions, answered
When is IRONMAN 70.3 Ohio 2027?
What distances can I race at IRONMAN 70.3 Ohio?
How hard is the course?
What is the swim like?
How long do I need to train for it?
How do I enter?
Read before you race
Half Ironman Recovery Time: A Practical Return
How Much Harder Is a Full IRONMAN Than a 70.3?
IRONMAN 70.3 Tallinn Training Guide
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Photograph of Sandusky, Ohio, USA: Ken Winters, U.S. Army Corps of Engineers, Public domain, via Wikimedia Commons. Not official race photography.
This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by IRONMAN 70.3 Ohio or its organiser. Details are based on publicly available information; names are used descriptively to identify the event. For accurate, up-to-date information and entry, always use the official event website.