Gotland Runt Offshore Race was first sailed in 1937. The race has had different formats but since 2024 it starts at Gråskärsfjärden south of Sandön. The race course then goes north along the outer archipelago to the Svenska Högarna, the farthest east of the Stockholm archipelago, before the boats sail south on open water to round Gotland with the finish at Sandhamn.

The race course is about 350 NM long and the Visby Course is 245 NM long.

The sailors are competing in different classes according to respite systems ORCi and Swedish Rating System (SRS). All entries must have a ratified measurement certificate and meet the detailed safety regulations.