Virginia’s Shenandoah Rail Trail will connect towns from Broadway to Front Royal with almost 50 miles of trail alongside the North Fork of the Shenandoah River and the Massanutten Mountain range.

I just found out about this! Similar to the W&OD trail in Northern VA.

Also looks like it's being threatened unfortunately:

We had a BIG surprise this week (not in a good way) that threatens the future of the Shenandoah Rail Trail. A new proposal was presented at the Commonwealth Transportation Board (CTB) meeting on December 9, leaving all of us shocked and frustrated. More recently, VDOT’s Rail-With-Trail assessment looked at restoring rail service alongside a trail. Their cost estimates indicate that attempting to rebuild the railroad and add a trail alongside it would cost roughly four times more than building a standalone trail.