National Park Service
Near Ashford, Washington: $20–$30/night, rigs to 35 ft. Open Late May through October. Book 6 months ahead via Recreation.gov.
National Park Service
Managing authority
Near Ashford, Washington
How much does camping at Cougar Rock Campground (Mount Rainier NP) cost, and when is it open?
Cougar Rock Campground (Mount Rainier NP) near Ashford, Washington (National Park Service) — camping fee $20–$30/night, season Late May through October, RV size limit Up to 35 ft. Reservations: 6 months ahead via Recreation.gov — book direct through the official channel.
The numbers
Fee range
$20–$30/night
Season open
Late May through October
RV size limit
Up to 35 ft
Reservation window
6 months ahead via Recreation.gov
The insider read
Closest NPS Rainier camp to Paradise (wildflower meadows). Timed-entry vehicle reservation for Paradise area starting 2024 — campers get auto access.
Original analysis from PickRV — synthesised from public sources you can verify, pulling the operational details competitor guides typically skip.
Verify at nps.govOn site
Book it right
PickRV doesn't handle campground bookings — reserve direct through the official channel so policies and cancellations flow through one record.
Opens recreation.gov
Every fact above is sourced from the managing agency's canonical page. Cross-check fee, season, and size limit before you depend on them.
Match the campground's size limit and hookup level to a vehicle category, then plan the rest of the trip.
Keep exploring
Near Newhalem
NPSInsider tip · North Cascades 'American Alps' — least-visited Pacific NW NP. Boat-shuttle from Diablo Lake to Stehekin (most isolated US town) requires advance booking.
Near Oak Harbor
StateInsider tip · Most-visited WA state park. Deception Pass bridge view + saltwater channels with whirlpools. North Beach loops face west for sunset.
Near Ilwaco
StateInsider tip · Mouth of the Columbia River. Two historic lighthouses on the headlands. Lewis & Clark NHP visitor center.
Near Coulee City
StateInsider tip · Dry Falls — once 3.5 miles wide + 400 ft tall, larger than Niagara in the Ice Age. Sun Lakes for swim. Geology trail.
Nearby & related
Sourced costs, campground directories, and the places worth a detour — the next layer of Washington trip planning.
Before you go
Washington rules
Verified 2026-05-10