Tunnel Hill State Trail

Illinois

86 Reviews

View Trail Map
View Map
Print
Complete
Favorite
Send to App

Register for free!

Register for free with TrailLink today!

We're a non-profit all about helping you enjoy the outdoors
  • View over 40,000 miles of trail maps
  • Share your trail photos
  • Save your own favorite trails
  • Learn about new trails near you
  • Leave reviews for trails
  • Add new and edit existing trails

Tunnel Hill State Trail Facts

States: Illinois
Counties: Johnson, Pulaski, Saline, Williamson
Length: 55.2 miles
Trail end points: Barkhausen-Cache River Wetlands Center (Cypress) and Eldorado High School Athletic Fields (Eldorado)
Trail surfaces: Boardwalk, Concrete, Crushed Stone
Trail category: Rail-Trail
ID: 6032279

Tunnel Hill State Trail Description

With a dark railroad tunnel and two dozen trestles crossing streams and rocky ravines, the scenic Tunnel Hill State Trail travels 55 miles through forests, wetlands, farmlands and towns in the rural countryside of southern Illinois. The aptly-named town of Tunnel Hill marks the route’s crest, where a 543 foot tunnel changes a gentle uphill into a gradual downhill in either direction.

About the Route 

The western endpoint of the Tunnel Hill State Trail is at the Barkhausen-Cache River Wetlands Center, in Cypress, 3.5 miles south of the town center. From here, the trail heads east to Karnak through the swampy Cache River State Natural Area, home to giant cypress trees, some 1,000 years old. In Karnak, the trail passes a campground, where it turns northeast to follow Karnak Rd, on a straight-away enveloped by tree canopy. In Belknap, the trail passes the Heron Pond–Little Black Slough followed by the Cave Creek Glade Nature Preserves, both wetland forests rich with wildlife. After passing underneath US-45, the trail comes to the town of Vienna, where a trailside park offers a spot to rest, peruse the Forman Depot Museum, or take a look at the giant penny-farthing sculpture. Cafés and groceries are also available nearby in town. 

Continuing to make its way north, the trail enters the Shawnee National Forest and steepens slightly on a 6 mile stretch between Bloomfield and its highest point in Tunnel Hill. Here, as the name suggests, a 543-foot tunnel takes the trail into pitch black. A flashlight or bike lamp is a must. As it re-emerging into the light, the trail comes to a trailhead in the town of Tunnel Hill, which has bathrooms, parking, and drinking fountains. 

A high canopy of the Shawnee National Forest provides ample shade for the 6 mile forested stretch between Tunnel Hill and New Burnside. Once it crosses IL-166 in New Burnside, the trail follows nearby US-45, which it runs adjacent to for 1.5 miles approaching the town of Stonefort. Here, a restored railroad depot next to the trail houses a museum. Northeast of Stonefort, US-45 remains in sight most of the way to Carrier Mills. Keep an eye out for turtles and snakes, which also like to use this trail. 

After passing farm fields, the trail comes to the east side of Harrisburg, the largest town on the route, with restaurants, grocery stores, and motels nearby. Leaving Harrisburg, the trail crosses IL-13 and then a bridge across Middle Fork of the Saline River, before continuing for 8 more miles northeast to Eldorado. Upon entering Eldorado, the trail shares an on-road right-of-way with Kennedy St. for just under a mile. The Tunnel Hill State Trail’s northern endpoint is near the Eldorado High School athletic fields, about 1200 feet due east of 2213 N Main St. in Eldorado.  

Connections  

In Eldorado, the Tunnel Hill State Trail connects to the Eldorado Bicycle and Walking Path, another rail-trail.

Trail History

This gem of Illinois rail-trails was built on the former Cairo and Vincennes Railroad, which was completed in 1874 and hauled coal from southern Illinois mines, as well as produce, timber, and passengers. The railway’s tunnel in Tunnel Hill tunnel was originally 800 feet long, but a section of it collapsed in 1929, leaving the 543 feet that remain today. Over the years, the railroad went through a series of ownership changes, and the tracks last belonged to Norfolk Southern Railroad, which turned the corridor over to the state in 1991. The first sections of trail opened in 1998. 

Parking and Trail Access

The Tunnel Hill State Trail runs between the Barkhausen-Cache River Wetlands Center (Cypress) and the athletic fields at Eldorado High School (Eldorado), with parking available at the endpoint in Cypress. 

Parking is also available at: 

  • 302 E Vine St (Vienna)
  • 20 W 2nd St (New Burnside)
  • 1422 US-45 (Eldorado)

There are numerous parking options along this route, see TrailLink Map for all parking options and detailed directions.

Tunnel Hill State Trail Reviews

bike riders

We started in Vienna and got 30 miles total. The trail was great, gravel, the tunnel is definitely a must to see. We stopped in to see the train station and talked to the lady in there she was super nice and had a lot of information to share on the trail. So glad we got to ride part of it.

Rode from the western trailhead to Vienna. Beautiful scenery. Trail in good shape. A few minor rough patches where larger gravel used as patches, but not anything to get in the way. Beautiful foliage and flowers were out.

Rode from the western trailhead to Vienna. Beautiful scenery. Trail in good shape. A few minor rough patches where larger gravel used as patches, but not anything to get in the way. Beautiful foliage and flowers were out.

Tunnel Hill rail trail

Snakes are out keep your eyes out and your feet up :) Tunnel Hill is a breathtaking rail-to-trail experience that truly stands out for its natural beauty and historical charm. The trail winds through the picturesque landscape of Southern Illinois, offering a serene escape for cyclists, hikers, and nature enthusiasts alike. One of the most striking features of Tunnel Hill is its namesake tunnel, which is a fascinating relic of the old railway. This long, dark tunnel provides a unique and slightly mysterious segment of the journey, adding to the adventure. The trail itself is well-maintained, with a smooth, packed gravel surface that makes for an enjoyable ride or walk. Along the route, you'll be treated to a variety of scenic vistas, including lush forests, rolling farmlands, and beautiful creek crossings. The diverse scenery keeps the journey interesting and provides ample opportunities for photography and wildlife spotting. In the fall, the foliage is particularly stunning, making this a great destination for leaf-peepers. What makes Tunnel Hill truly special is its peaceful, uncrowded atmosphere. Whether you're a seasoned cyclist looking for a long-distance ride or a family wanting a leisurely day out, Tunnel Hill offers something for everyone. The gentle grades and numerous access points make it accessible to all levels of fitness and experience. In summary, Tunnel Hill is more than just a trail; it's an immersive experience into the natural and historical richness of Southern Illinois. It's a must-visit for anyone who loves the outdoors and wants to explore a trail that is both beautiful and steeped in history.

Harrisburg to Katnani and back

Rode from Harrisburg to Karnak and back today. Great trail. A little wash out about 10 miles north of large tunnel. Not much on trail. Bathrooms at Harrisburg locked. Saw very few riders. A few walkers. One guy on an electric bike with a rifle.

Nearby Trails

Go Unlimited Today!

  • FREE Account
  • View over 40,000 miles of trail maps
  • Post your trail reviews
  • Share your trail photos
  • Save your favorite trails
  • Learn about new trails near you
  • Get a free map in the app!
Register for FREE
  •  
Purchase Unlimited