Toy Hauler or travel trailer?

My TH was the same as yours. A 26' box + the hitch. Cottonwood Pass was no problem at all. I never really had any problems getting to where I wanted to be because of the length. The biggest factor has always been the height and width of the trailer. Low, overhanging tree branch's are usually the deciding factor. Now with the 5th wheel pulling the ATV trailer, the same will be true, except it's 4" taller. The ATV trailer tracks right in the 5th wheel tracks when turning, so anywhere the 5th wheel can go, so can the ATV's. I haven't been on a regular road yet that I couldn't pull the trailer down. Some of the national forest access roads do present a bit of a challenge sometimes, but again, the trailer length has little to do with that. Some places I just can't get into unless I was pulling something like my old tent trailer years ago.