North of Fort Pierre, the Oahe Downstream OHV Area has over 400 acres open to dirt biking in hilly grassland and river bluffs. This is an open riding area with no designated trails. The boundary of the open riding area is marked.
To reach Oahe Downstream OHV Area from Fort Pierre, head north on SR1806 for 5 miles.
Overall, Oahe Downstream ORV Area is the 3rd most popular dirt bike trail of all 7 dirt biking rides in South Dakota.