IRONMAN Leeds 2027
A full-distance race in Leeds with a swim in Waterloo Lake, a hilly 180 km bike with 2,574 m of climbing and a run of four 10 km loops around Roundhay Park.
45 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? Ironman 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.
“The organiser gives 2,574 m of climbing on the bike, so build climbing strength and practise descending and fuelling on rolling terrain. The run is four 10 km loops, so pace by lap and plan aid-station stops.”
The race
The course
Swim in Waterloo Lake. Wetsuits are legal at 24.5°C (76.1°F) or colder, up to 5 mm thick, and prohibited above that.
A 180 km course with climbs and descents and 2,574 m of climbing (organiser figure).
A short climb out of transition and a loop of the Upper Lake in Roundhay Park, then four 10 km loops in and around the west side of the park.
Not yet confirmed for this edition: cut-off times, aid station spacing, water temperature history, course maps (not checked against official GPX), bike lap count, bike lap count. 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 Leeds course page on 4 October 2026. Courses change; the official page is always the last word.
Questions, answered
When is IRONMAN Leeds 2027?
What distances can I race at IRONMAN Leeds?
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What is the swim like?
How long do I need to train for it?
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Read before you race
Half Ironman Recovery Time: A Practical Return
How to Choose Your First European IRONMAN
European IRONMAN Calendar and Race Comparison Guide
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This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by IRONMAN Leeds 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.