Mammoth Cave Railroad Bike & Hike Trail

Overview

This is the park’s signature multi-use rail-trail: about 9 miles one way on the old Mammoth Cave Railroad corridor (1886–1931). Expect a mostly shaded ride or walk on gravel through hardwood forest with historic waysides and a couple of scenic stops. It’s not pancake-flat like many rail-trails—there are rollers and a few bona fide climbs, especially toward the south end.

Length is roughly 9 miles point-to-point; most visitors make it an out-and-back of 16–18 miles. On foot, a 16-mile out-and-back commonly takes 5–6 hours. By bike, plan anywhere from 1–3 hours depending on pace and stops.

Route and Access

You can hop on from Park City (south end), several pull-offs along Mammoth Cave Parkway, or near the park’s Visitor Center (north end). If you want the easiest finish, start in Park City, climb to the Visitor Center for water/restrooms, then enjoy the mostly downhill return. If you start at the Visitor Center, keep some gas in the tank for the uphill ride back.

Surface, Grade, and Bike Choice

The tread is gravel (5–10 feet wide) with stretches of loose stone. Hybrids with wider tires, gravel bikes, and mountain bikes are best; skinny road tires and very new riders will have a tougher time on the steeper, looser sections. Grades are rolling overall, with the steeper pitches clustered near Park City where many riders choose to walk. The trail crosses the park road a few times—expect posts, signs, and required dismounts at crossings.

Highlights

You’re following living park history—watch for interpretive railroad markers and historic sites along the way. Scenic stops include Valley Overlook and Sloan’s Crossing Pond, plus a distinctive curved trestle near Sloan’s Crossing. Shade is plentiful under the tall canopy, which makes hot days far more pleasant.

Rules and Etiquette

Helmets are strongly recommended. Cyclists must yield to hikers (and horses where trails are shared). Walk your bike where signed and dismount at all road crossings. E-bikes are permitted everywhere traditional bikes are allowed.

Best Time to Go

Open year-round. Spring wildflowers and fall color are great fits for a shaded gravel cruise, but be mindful that autumn leaf litter can hide loose gravel—descend conservatively. Weekends and midday see more traffic; start early for a quieter, cooler ride. Shade keeps summer outings reasonable if you avoid the afternoon heat.

Tips

• No shuttle runs this corridor, so plan for an out-and-back if you want the full experience. There are parking lots along the trail if you’d rather sample a shorter segment.
• Water and restrooms at the Visitor Center make an ideal turnaround for families.
• If you’re craving singletrack, the park’s Big Hollow Trail system offers dedicated MTB loops nearby.