The IRONMAN Group has announced that Toyohashi and the Atsumi Peninsula will play host to the inaugural IRONMAN 70.3 Japan – Higashimikawa triathlon, which is scheduled to make its debut on Saturday, June 10, 2023.
According to IRONMAN…. ‘Athletes will take on a journey as they will embark past some of the Atsumi Peninsula’s most beautiful coastline and agricultural landscapes.’
General registration for the newest IM 70.3 race in Japan opens today (February 15, 2023).
“We could not be more excited to return to Japan for an IRONMAN 70.3 triathlon,” said Jeff Edwards, Managing Director of Asia for The IRONMAN Group.
“The Atsumi Peninsula provides a fascinating backdrop of shoreline vistas and agricultural villages. The 90 km single-loop bike course is certain to please all athletes. Toyohashi station is a quick high-speed train ride from Tokyo. We look forward to offering a new IRONMAN 70.3 race opportunity in Japan.”
IRONMAN 70.3 Japan – Higashimikawa will treat athletes to a 1.9 km swim in Atsumi Bay at Shiroya Beach Park, a scenic one-loop 90 km bike ride around the Atsumi Peninsula, culminating with a fast point-to-point 21.1 km run from Shiroya Beach Park to a finish at Toyohashi Sports Park.
“It is our great honour and pleasure to bring back a Japan IRONMAN race to the Higashi Mikawa region after an absence of three years,” said Hiroshi Otsuka, director of the East Mikawa Community Sports Development Foundation.
“We intend to show visitors our great Higashi Mikawa landscapes and hospitality. Our community is looking forward to hosting an international IRONMAN 70.3 event.”
Taro Shirato, chairman of Athlonia Triathlon, added “We are tremendously excited to move IRONMAN 70.3 to the Atsumi Peninsula with courses that showcase the fantastic terrain and culture of the region.”
Located on the southeast aspect of Honshu Island, the Atsumi Peninsula of Aichi Prefecture is 300 km from Tokyo. It is a region with environmental and economic diversity. Stone and sand beaches ring calm bays as well as rugged shorelines that feature some of Japan’s best surfing.
The 2023 IRONMAN 70.3 Japan – Higashimikawa triathlon will offer qualifying slots to the 2023 VinFast IRONMAN 70.3 World Championship taking place in Lahti, Finland.







