O-SEE Backyard is a looped trail ultra on well-maintained hiking paths around Olbersdorfer See near Zittau, with a gentle but persistent endurance focus. Its distinctive last-person-standing format sends everyone out together each hour, emphasizing patience and mental strength over speed. It suits committed endurance runners while offering a supportive, communal festival atmosphere.
See the full race lineup
Distances, climb, prices, cutoffs and registration status for every race at this event. Free once you sign in.
Sign in to see race details