U.S. Bicycle Route 23

U.S. Bicycle Route 23 is a north-south United States Bicycle Route that travels through Middle Tennessee and the Pennyroyal Plateau region of Kentucky in the United States.
The Tennessee segment was designated on October 17, 2013 as the first national bicycle route in the state. The Kentucky segment was designated May 2019.

Kentucky

The route in Kentucky covers. Within Kentucky the route is named the Cave Country Bike Tour. The northernmost portion of the route runs along the eastern portion of the TransAmerica Trail's Mammoth Cave Loop route.

Tennessee

In Tennessee the route covers.

Spurs

Spur to Natchez Trace is a connector to the Natchez Trace Parkway.
Spur to Henry Horton State Park is alternative route to Henry Horton State Park.