Acadia National Park has a wide array of hiking trails for all comfort levels, from gentle walking along the ocean to scaling granite cliffs with the help of iron rungs affixed to the rocks. A few favorites are the Champlain North Ridge Trail, Cadillac West Face Trail, The Ocean Path, and Jordan Cliffs Trail.
Cadillac Mountain (1529 feet) is the highest point on the eastern seaboard, the first sunrise in the USA every year and the only mountain on the island with a road to the summit. Reservations are required to drive up, so plan ahead or take one of the four trail options (North Ridge, South Ridge, West Face, or Gorge Path) and hike to the top!