River Road is a hiking, biking, and horse trail in Howard County, Maryland. It is within Patapsco Valley State Park: Orange Grove Area. It is 0.7 miles long and begins at 61 feet altitude. Traveling the entire trail is 1.3 miles with a total elevation gain of 110 feet. The Patapsco Valley State Park Shelter 106 shelter is near the trailhead. There is also parking. The trail ends near the Patapsco River Reservoir (elevation 69 feet) reservoir.