OnePartnerGroup Ski Marathon Östersund is an annual long-distance race in classic technique taking place in the city of Östersund, Sweden. The main race is 42 km but there are also shorter distances such as 19km, 10km and 6km, with start and finish at the Östersund Ski Stadium.

The long-distance race is carried out with an introductory master’s lap of 4.5 km after which you go out on a 19km long loop  with lappings at the ski stadium.

Since its start, the race has functioned as a seeding race for Vasaloppet and Tjejvasan and it attracts both elite, amateurs and para-athletes to Östersund Ski Stadium.