It really varies based on where you intend to travel. My current 5th wheel is listed at slightly over 35 measures a little over 38 end to end and in Utah and a lot of the areas I roam in Idaho and Wyoming there are probably 70 plus percent of the forest service campground I can't get into. Many of those are small half dozen or so sites, maybe an outhouse, fair bit of dirt road to get to. I should be able to fit into almost all the state parks from what I remember the sizes as being. (Always used smaller TT's or motorhome prior to this rig). The national parks in this area are pretty limited in spot availability. Commercial parks no issues for the most part, but surprisingly while the length is no problem I've already run into slight problems in opening the slides all the way up on both sides. A lot depends on whether or not there is someplace other than the camp spot to park the tow vehicle.