Yes they have spots that would fit large rigs. The best place to see the length of each site would be Reserve America website. It lists each site and length. https://oregonstateparks.reserveamerica.com/camping/goose-lake-state-recreation-area/r/campgroundDetails.do?contractCode=OR

Yes! We’re in a 40’ Super C and we fit fine. We also have our tow car parked in the space in front of the rig.

I don’t know. Our trailer is 20 feet.

Thank you, Smethers! Didn’t even think to check Reserve America since this is a non-reservable campground. Thanks for the tip!!