IRONMAN Japan South Hokkaido takes place on September 12, 2027, in Kikonai, South Hokkaido, Japan. The race is a full IRONMAN-distance triathlon with a swim, bike and run, organized by IRONMAN. The scraped race listing gives the distances as a 3.8 km swim, a 180 km bike and a 42.2 km run.
The swim is in the Tsugaru Strait and is listed as an ocean swim. The bike course uses the Hakodate-Esashi expressway, closed to traffic, and the race page says there is no speed limit. The run is about 95% flat, on country roads around Kikonai.
T1 is 15 minutes from Shin-Hakodate-Hokuto station. T2 and the finish are a 3-minute walk from Kikonai station. Hotels are in the Yunokawa hot springs area, 10 minutes from Hakodate Airport. Typical air temperatures run from 16°C to 27°C, and average water temperature is about 21°C. Registration is marked as opening soon on the race page.













