OR 205 begins at the Roaring Springs Ranch as a continuation of Catlow Valley Road, which connects with Nevada State Route 292 near Denio, Nevada. It travels north along the edge of the Catlow Valley and turns east to enter Frenchglen in Blitzen Valley.
The OR 205 highway starts at the Roaring Springs Ranch, extending from Catlow Valley Road as it meets Nevada State Route 292 near Denio, Nevada. The route then heads north along the valley's edge before turning east into Frenchglen in Blitzen Valley.