Petrified Forest Loop Trail is a 10.4-mile loop foot trail in Theodore Roosevelt National Park, North Dakota. Difficulty: strenuous, estimated from distance. That is the full hike: the mapped trail line covers only 6.66 mi of it, so don't plan from the map line alone. The figure is for the Park Service's “Hike the Petrified Forest” hike, which uses this trail.

Hike the Petrified Forest
The entire loop is 10.4 miles.
Read the official NPS description
Open Petrified Forest Loop Trail on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Theodore Roosevelt. Theodore Roosevelt has permits or reservations for some areas: see the Theodore Roosevelt page for what's needed.