Originally Posted by
adventurepdx
"Walk-in" or "Hike-in" sites are typically
not the same as a "Hiker/Biker" site.
- Walk-in/Hike-In sites mean that there is no car parking at the site, and people have to "walk-in" from the parking lot to the campsite. These sites are generally more "rustic" than a typical drive-in spot, and are usually priced cheaper. While a cyclist can use them, they are for anyone who arrives, whether by car, foot, or bike (or canoe/kayak if the park is near a waterway). For example, there's a campground near me that has a hike-in site about a half-kilometre from the parking lot. The park provides wheelbarrows at the parking lot for folks to cart their gear in.
- Hiker/Biker means that the campsite(s) are specifically designated for people travelling under their own power, whether on a thru-hike or bicycle tour. (Areas near a waterway may also have a specific kayak/canoe in site(s).) No one travelling by a motor vehicle can use them, and the park has to keep them only for cyclists or hikers, even if every single other spot in the park is full. And the price is usually much cheaper than a regular spot. Here in Oregon, it's $5 per person. In Washington State, it's typically $12-14 per site. I know that Glacier National Park in Montana has $5/person hiker/biker sites.
Hiker/biker sites can run the gamut from simply a grassy area that a group can set up in, to specific and separated sites for each person/party. Sometimes they are tucked away in an area of the park that wouldn't be idea for car camping or something else, or sometimes they are much more luxurious. For example, my favorite hiker/biker site in the world (as of this moment) is at Cape Lookout at the Oregon Coast. It's literally 100m from the beach, closer than much of the car camping spots! And it resembles an Ewok village.

Here are some pics from it: <cut>
I thought I stayed at Cape Lookout, but I think I stayed at
Cape Meares further North. I'm definitely used to the $5/bike I enjoyed in Oregon, and reasonable fare ranging from $5-$7 in California.
Thanks for the clarification about walk-in versus hiker/biker.