湘南国際マラソン

湘南国際マラソン, the Shonan International Marathon, takes place in Ōiso, Japan, on 6 December 2026. There is a single event: the 42.2 km marathon, starting at 9am. No elevation data has been published for this road course.

A 9am start in December usually means conditions that suit a fast time: cool temperatures, dry air and the day already well under way. It is the kind of race where a well-prepared runner can target a personal best, provided the long runs have been banked through the autumn and marathon pace has been practised in blocks of 10 to 15 km. Japanese races are known for their punctuality and strict cut-offs, so it is worth checking the time limit before entering and allowing a comfortable margin. Travelling also means dealing with jet lag: arriving a few days early makes a real difference.