If I start hiking at Tillamook Head (Seaside, OR), will I be able to Indian Beach Trailhead (Cannon Beach, OR)? If so, is it feasible (or are there some hindrances, like the trail turns into a bog after a rainy weather, etc.)? Further, will I be able to walk along Ecola State Park Rd. to Cannon Beach (e.g. to Les Shirley Park), or is that a car-only road?
Update: according to this, the answer to my first question seems to be yes:
This traverse hike, a designated National Recreation Trail and also part of the Oregon Coast Trail, can be shuttled by beginning at either the Indian Beach Trailhead in Ecola State Park, just north of Cannon Beach, or the Tillamook Head Trailhead, although the latter is a better choice if you're doing this as a 12.6 mile out and back trip because you don't have to pay the state parks day use fee. The Tillamook Head Trailhead is just south of Seaside.