The Mine Run Trail is an oft-forgotten path nestled in the northwest section of Great Falls Park, away from the namesake waterfall, Mather Gorge, and Potomac River. Mine Run, nonetheless, is a lovely tributary of the Potomac and is the highlight of this pleasant, 0.7-mile stroll. Small cascades dot the creek, shaded under a thick canopy of deciduous trees.
The Mine Run Trail is technically a one-way track, but a loop can easily be formed. Start the hike at the signed trailhead, situated virtually halfway between the north and south parking areas at Great Falls Park, roughly a ¼-mile walk up the length of the southern parking lot from the Great Falls Visitor Center.
After leaving the road, the wide but root-laden trail bears west into the forest, with Mine Run appearing almost right away on the left. Hikers can also see a boggy depression on the right, filled with water—this is Clay Pond. Within 1/10 mile, the trail runs right up to the banks of Mine Run, which gently cascades through the greywacke.
Upstream from this point, the path suddenly climbs, then approaches some steeper drops on Mine Run on the left. Around 300 yards into the hike, the path bends north, leaving Mine Run behind. However, a well-worn social trail on the left leads to the best scenery of the hike: a beautifully cascading slide of water, blighted only by the sight of a road overpass upstream.
Back on the main trail, bear north as the trail continues through wooded uplands. Moss-covered rock outcrops on the right and views of a Mine Run tributary on the left offer some natural interest, but the route is relatively banal from this point. At ½ mile, the Mine Run Trail ends, merging with a gravel road running north-south. Bear right, following the road back to the northern parking lot in 2/10 mile (then walk south to return to the start), or, alternatively, continue northward to the Riverbend Road Trail or Riverbend Park.
The Mine Run loop takes around 20-30 minutes, plus additional time to explore the lovely creek.