Driving US 101 needs no permit. Money goes to a handful of fees, and a few places are worth reserving.
Olympic National Park entrance fee: in 2026 it was $30 per private vehicle (all occupants), valid for 7 consecutive days, $25 per motorcycle, and $15 per person on foot or bike (15 and under free). An annual Olympic pass was $55. The 2026 fee-free days (for US citizens and residents) were February 16, May 25, June 14, July 3 to 5, August 25, September 17, October 27 and November 11. The park fees page is the source for the current prices. A 4-day loop passes the Hurricane Ridge, Lake Crescent, Sol Duc, Rialto Beach, Hoh and coast entrances inside one 7-day pass.
Ferry: the Edmonds to Kingston crossing is first come, first served, with no vehicle reservations on this route. On November 3, 2026 the fare for a standard vehicle under 22 feet (6.7 m) with driver was $20.25 and for each adult passenger $11.35, collected at Edmonds. Fares change, so check the WSDOT fare page, and see the ticket page for how WSDOT sells tickets and which routes take reservations.
Quinault Rain Forest trailhead (National Forest): the Forest Service lists a $5 per vehicle day-use fee, payable by card at the machine or with a valid pass. The Lodge Trail and the Lake Lane trailhead near Lake Quinault Lodge list no fee.
Campgrounds: Kalaloch Campground is open year-round and in 2026 required reservations from May 15 to September 20, through recreation.gov. Mora Campground near Rialto Beach and Hoh Campground also take reservations in peak season, up to six months ahead on recreation.gov. Dates move each year, so check the park page for the one you want.
Cape Flattery (optional): the Makah Tribe's Cape Flattery trail and beaches need a Makah Recreation Pass, $20 per vehicle for the calendar year, bought online or at a booth near the trailhead and displayed in the windshield. It is not on the loop, and the pass is separate from the national park fee.