Robert Rives posted the route:

The Neuse River Trail, as described on Wikipedia:

The Silver Comet Trail is a 61.5 mile rail trail from Smyrna, GA, to the GA-AL State Line.  It is part of a 95.5-mile-long continuous trail from Atlanta to Anniston.

Erich Hellstrom attempted to run the Silver Comet in August 2017, but didn't complete the route.  He posted as follows: