The first map shows the Greenway Trail from the Potomac River to route 355. The trail (green line) follows the meandering Seneca Creek (blue line). The mileages, listed after the map, are the distances between the red dots on the map.
Trail Section - Mileage
Potomac River to River Road - - - 0.9 miles
River Road to Berryville Road - - - 1.3 miles
Berryville Road to Berryville Road Side Trail - - - 2.2 miles
Berryville Road Side Trail to Route 28 - - - 2.2 miles
Route 28 to Black Rock Mill - - - 1.4 miles
Black Rock Mill to Route 118 - - - 1.3 miles
Route 118 to Riffle Ford Road - - - 2.5 miles
Riffle Ford Road to Seneca Creek State Park Road - - - 1.2 miles
Seneca Creek State Park Road to Clopper Road - - - 1.1 miles
Clopper Road to Route 355 - - - 2.3 miles
Trail Head at Potomac River
Drive to the end of Riley's Lock Road. There is a dirt parking lot where you can leave your car. Go up to the canal path and across the bridge over Seneca Creek. Take a right turn on a dirt road which leads to Tschiffely Mill Road. The Greenway Trail follows the road.
There are a few parking spaces on the shoulder of Seneca Road near the Greenway Trail sign. The trail goes from Tschiffely Mill Road, across Seneca Creek on River Road and up Seneca Road fifty feet or so to the Greenway Trail sign.
There are a few parking spaces on the shoulder of the road where the road is next to the creek. A few more spaces are further south along the shoulder.
Berryville Road Side Trail
The side trail comes out at a sharp bend in the road where the woods ends and a field begins. This is about 1.6 miles down Berryville Road from Route 28. There is a wide grassy shoulder where one may park.
There is a parking lot on the right side of the road (heading NW) just before crossing the bridge.
Black Rock Mill
There is a parking lot at Black Rock Mill. Also a few cars can park on the dirt shoulder where the trail comes out on the right (heading north). The Greenway Trail sign marks that spot.
Not a good place to park. The shoulders are narrow and the traffic is fast. Maintenance workers may park on the right after crossing the bridge (heading south). Stay on the right shoulder when walking to and from the trail because there is no shoulder on the left.
Riffle Ford Road
Park on the wide shoulder where the trail comes out on the right (heading south) just before the creek. The trail starts behind the red metal gate.
Drive to the Seneca Creek State Park Office. A side trail to the Greenway Trail starts at the end of the parking lot. Stop at the Office (formally the Visitor's Center) for a park map. (Note: there is no fee to go to the Park Office)
Heading north on 355, there is a parking lot on the right just across the bridge over Seneca Creek.
Seneca Creek Greenway Trail Description - Potomac River to Rt. 355
The second map shows the Greenway Trail from Route 355 to the Patuxent River State Park. The orange line represents the Magruder Branch Trail.
Trail Section - Mileage
Route 355 to Watkins Mill Road - - - 3.0 miles
Watkins Mill Road to Brink Road - - - 1.4 miles
Brink Road to Huntmaster Road - - - 1 mile
Huntmaster Road to Watkins Road - - - 2.8 miles
Magruder Branch Turnoff to Route 124 - - - to be built
Route 124 to Hawkins Creamery Road - - - to be built
Hawkins Creamery Road to Route 108 - - - to be built
Route 108 to Patuxent River State Park - - - to be built
Watkins Mill Road
There is a parking lot off the road on the right side (heading north) just before you cross the bridge.
There is limited parking on the shoulder of the road. The trail head is at the intersection with Wightman Road.
There is parking for two or three cars on the gravel parking area at the intersection of Davis Mill and Huntmaster. The trail head is about 50 ft. up Huntmaster after crossing the bridge over Seneca Creek.