[Richard]

Length won't be a problem if you stay on the Trace. Do however obey the speed limit. The rangers strictly enforce the speed limit on the Trace, The Blue Ridge Parkway, and the Shenandoah Parkway. They have NO sense of humor. As a cyclist, I appreciate the enforced speed limit since all three see heavy cycling traffic. I don't know how they would react to the total length.

It is beautiful, but not expedient.

We have camped in the Newell at the Rocky Springs. It's no hookups and the water available is bad. But the campsite was beautiful and plenty big.

https://www.nps.gov/natr/planyourvisit/rvs.htm