Mt. Katahdin has several trails leading up to Baxter, Pamola, or Hamlin Peaks These trails start right up the mountain, but each trail on the mountain ends up taking eight to ten hours round-trip depending on ability. The rest of the trails go up the north side or west side of the mountain. These are accessed from the Chimney Pond Trail. For these trails, hikers must park at the Roaring Brook Campground and hike in. All trails are maintained by the Baxter State Park Authority, which runs the State Park. All of the trails on the mountain are classified as very strenuous, the highest classification the Park Authority gives, except for Saddle (strenuous), Hamlin Ridge trail (moderate), and Chimney Pond (moderate).