Barnesville · Frederick County · MD
9/11 National Memorial Trail (Maryland) is a 390.7-mile trail near Barnesville, in Frederick County, MD. It climbs 9,615 ft and descends 8,752 ft, between 33 ft and a high point of 902 ft. Mapped for mountain biking.
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Trail data © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP. Updated 2026-07-21. Open the interactive map for routing, weather, and offline use.