Roundhay Park and repeated Yorkshire climbs
The organizer confirms August 15, 2027. The swim description uses two laps of Waterloo Lake with an in-water turn, followed by a run to the single transition area on Roundhay Park’s cricket pitch. The page gives slightly different transfer distances of 300 m and 350 m; allow for the final layout instead of treating either estimate as exact.
The bike preview heads toward Shadwell before three main loops through areas including Harewood House, Eccup Reservoir and Golden Acre Park. Black Hill Road is the major repeated climb. The published ascent estimate makes this a different preparation problem from a flat full-distance race: choose suitable gearing and practise climbing without exhausting the effort needed later.
The run begins with a climb and an Upper Lake section before four main loops in and around Roundhay. Expect the final discipline to continue asking for effort on rises rather than becoming a flat recovery run. Use your current training capacity to decide whether this course and date are realistic; the event’s demanding profile is not a reason to compress missed preparation.
The current transition uses blue bike and red run bags in the same area. Rehearse the change sequence and locate the correct rack, mount line and dismount line in the final guide. Maps remain subject to change, so recheck the 2027 profile, intermediate cutoffs and aid locations before making a final pacing and nutrition plan.
Confirmed race date
IRONMAN Leeds: August 15, 2027. Verified on October 14, 2026 against the official event information.
Current race profile
The organizer remains authoritative if the course, distance program, venue, registration or schedule changes. Historical conditions are not a forecast; use current organizer advisories and the race-week forecast.
Training calendar anchors
These dates are calendar arithmetic, not proof that a plan length is appropriate.
Use the training start-date calculator for another runway and compare the IRONMAN training hub. Do not compress missed weeks to force the calendar.