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Travel trailer rentals in Seattle

There are 193 travel trailer listings within 50 miles of Seattle, 41% of the market, at a median $126.00 a day and a median 24 feet long. 41% of them fit Olympic National Park's standard 21 foot site and 20% clear Mount Rainier's White River campground, which caps trailers at 18 feet.

What a median 24 foot travel trailer fits

Share of Travel trailer listings clearing each published campground limit
CampgroundPublished capShare that clears it
Olympic standard site21 ft41%
Mount Rainier, White River18 ft20%
Mount Rainier, Cougar Rock27 ft65%

On the ferry

A travel trailer at a median 24 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

If a specific campground is the reason for the trip, check its trailer cap before booking on price. Trailers save money per night and lose sites.

Only 20% of trailers clear White River, against 63% of Class C motorhomes, after choosing on a $126 median day rate.

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

How this was measured. Joined the median daily price of each class against the share of that class clearing each park's cap, which showed the cheapest class is also the worst-fitting: trailers are $147 a day cheaper than a Class B and clear White River 80 points less often. 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.