Our trailer is 34' 6" and we have not been turned away from any sites from Drumheller AB to Barrie Ont as well as through Montana, SD and ND. Some of them were abit tight and we had to park the truck sideways in front of the trailer but we always find a site. As well we start booking our vacations 3-4 months in advance and that gives us lots of time to work our vacation plans to the available camp grounds. Also we generally try to get pull throughs as long wheelbase Solid Front Axle 4x4 trucks don't turn very well. As 2Susan said Calloway is not a bad place to camp, we generally go there once a year and actually ask for overflow camping as the sites are much larger than the serviced ones and with the Honda genny life is good.
John & Deb
2011 F250 Lariat FX4 Crew Cab 6.2
2011 Flagstaff V-Lite 30WRLS
Days Camped 2013: 16 2014: 5 2015: 3