Mine is a 33' model I guess but its more like 38' from to back, if not 40'. As long as you plan ahead you should be fine. Sometimes, especially with state and national parks that are in demand I've had trouble finding sites that will work, when there aren't many sites left to choose from (seems the odd sites are typically the last ones to go). In those cases I just find a private park nearby and call and let them know what I have. Never had any trouble going where we wanted to go as long as I plan ahead.
2015 Cougar 339BHS 5er
2016 RAM 2500 Crew Cab, 4x4, Laramie, 6.7L Cummins
Andersen Ultimate Aluminum 5th Wheel Connection
GONE:
2014 RAM 2500 Crew Cab, 4x4, Tradesman, 6.4L Hemi