The Virginia Capitol trail stretches 52 miles and is a wonderful paved trail to ride. Note that it can get busy on weekends. More info: https://www.virginiacapitaltrail.org/
We like to park at the I295/Route 5 trailhead - it's about a 90 minute drive North from the lake: four mile trailhead
Note: The Capitol Trail is OPEN during COVID-19 (including restrooms).