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Class B motorhome rentals in Seattle

There are 61 class b motorhome listings within 50 miles of Seattle, 13% of the market, at a median $273.00 a day and a median 20 feet long. 85% of them fit Olympic National Park's standard 21 foot site and 100% clear Mount Rainier's White River campground, which caps RVs at 27 feet.

What a median 20 foot class b motorhome fits

Share of Class B motorhome listings clearing each published campground limit
CampgroundPublished capShare that clears it
Olympic standard site21 ft85%
Mount Rainier, White River27 ft100%
Mount Rainier, Cougar Rock35 ft100%

On the ferry

A class b motorhome at a median 20 feet falls in the under 30 foot fare band. In that band Washington State Ferries charges roughly double if the vehicle stands over 7 feet 2 inches tall, and only 33 of 473 Seattle listings publish a height. Compare the crossings.

What to do with this

Choose a Class B over a camper van only if the extra room matters. On park access the two are equivalent and the van is cheaper.

$24 a day over a camper van for park access you already had.

Check a specific length against every campgroundOlympic National ParkMount Rainier National Park

How this was measured. Ranked all five paged classes by share clearing White River. Class B is the only one at 100%, ahead of the camper van at 98%, while costing $24 a day more. The premium buys almost no additional access. Measured September 5, 2026 across 473 live listings. Sources: Outdoorsy live search, Seattle 50mi, Mount Rainier campgrounds.

Not sure what fits?

Send us the dates and the destination. We will come back with rentals whose published length clears the campground, and what the ferry charges to carry them.