The Marginal Way in Ogunquit, ME, is a scenic and easy 2 mile out-and-back hike that leads from Perkins Cove to the Sparhawk hotel in the center of Ogunquit.
You can enter on either side, but there's more parking in Perkins Cove. The trail leads along the ocean for 95% of the trip with numerous lookout spots.
Dogs are not allowed between May - September; otherwise they're allowed on leash. You can walk back on the trail or along the road.