UCI Marathon Series - O-Tour Bike Obwalden 2013 Latest News from the Race Sauser wins O-Tour Bike Obenwalden marathon Kleinhans earns women's victory Races UCI Marathon Series - O-Tour Bike Obwalden 2013 8 September 2013 | Obwalden Marathon - Sauser wins O-Tour Bike Obenwalden marathon 2013-09-08