South Run - Mercer Lake Loop Route
ElevationAscent: 165' 50 m
Descent: -165' -50 m
High: 287' 88 m
Low: 217' 66 m
GradeAvg Grade: 1% (1°)
Max Grade: 7% (4°)
Current trail conditions
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“A 4.3-mile lollipop loop hike from South Run Recreation Center around Mercer Lake and return.”— Victor Stephenson
Family Friendly The easy trail is very well maintained. The route is mostly paved and the unpaved section is flat and in very good condition.
The trail consists of mostly gentle rolling wooded hills and flats, following a stream bed and encircling Lake Mercer. There are a few steep but short climbs. The trail is mostly paved doubletrack with a few sections being flat and unpaved gravel. The longest climb comes as you approach the dam on the east side of the lake. After crossing the dam, the trail serves as a boundary between townhouses and the woods for a stretch. Most of the trail is shaded with only a few sections open to the sky. The trail is in great shape and makes for a very enjoyable outing.
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Land Manager: Fairfax County, VA - Park Authority