Length: 0.75 mi
Est. time: 18m
Gain: 67 ft
Loss: 69 ft
Max elev: 388 ft
Elevation profile
+67 ft gain · −69 ft loss — an estimate from a DEM.
Trailhead parking (Place)
Rohrbach Group Campground (Campground)
The Union Advance Trail at Antietam
⏱ The trail is about one mile in length with two hills and a combination of grass and dirt trail bed. More than half the trail is shaded by trees.
🗓 winter, spring, summer, fall
Plan smart, verify on site
Length, elevation, and difficulty are estimates derived from open data (NPS Public Trails GIS, high confidence) — not a safety guarantee. Conditions change; check current closures, weather, and water, and carry the essentials. Always defer to NPS.gov and park rangers.