IRONMAN 70.3 Costa Navarino

The IRONMAN 70.3 Costa Navarino is an annual half-distance triathlon held at Costa Navarino in Messinia, southwestern Peloponnese. Greece’s first IRONMAN 70.3 was inaugurated at this venue in 2019 with a field of some 1,500 athletes. The 2026 edition takes place on Sunday 25 October. The course begins with a 1.9-kilometre swim in Gialova Bay from the beach before W Costa Navarino, continues over 90 kilometres by bicycle through the Messinian countryside, and closes with a 21.1-kilometre run past the fishing village of Gialova and the Divari lagoon.

The race is co-organised by ευΖΗΝ feelόsophy and the Region of Peloponnese under the title sponsorship of PPC, with Costa Navarino as official hospitality host. The 2025 edition drew more than 1,200 athletes from sixty countries. General registration for the 2026 race sold out; remaining places were available through special entry.