Waterfall Glen: Everything to Know Before You Go
Image credit: Openlands
Just a stone’s throw from Lemont Downtown, Waterfall Glen Forest Preserve is one of the area’s most beloved outdoor escapes. With its winding trails, scenic overlooks, and of course the iconic waterfall, it’s a must-visit spot for hikers, bikers, runners, and nature enthusiasts alike. Whether you’re planning a weekend adventure or a quick trip after work, here’s everything you need to know before you go.
The Basics
Waterfall Glen Forest Preserve sits just west of Lemont, wrapping around the Argonne National Laboratory. Spanning more than 2,500 acres of woodlands, prairies, and wetlands, it’s a vast natural playground for outdoor enthusiasts. The highlight of the preserve is the Rocky Glen Waterfall, a man-made cascade that has blended seamlessly into its surroundings and become a favorite photo spot. Visitors can enjoy a wide range of activities throughout the year, from hiking, biking, running, and horseback riding in the warmer months to birdwatching and even cross-country skiing once winter sets in.
The Trails
Image Credit: Forest Preserve of DuPage County
Waterfall Glen boasts nearly 11 miles of crushed limestone trail that loops the preserve. This wide path is perfect for walkers, bikers, and runners of all levels. Smaller interior trails weave through prairies and oak-maple forests, giving you plenty of options to explore.
Main Loop Trail: About 9.5 miles. Great for a half-day hike or bike ride.
Rocky Glen Waterfall Trail: A short side trek off the main loop, leading you to the preserve’s crown jewel.
Tear-Thumb Trail: About 1.1 miles, offers an easier to traverse turf trail.
The Waterfall
Image Credit: Forest Preserve of DuPage County
Rocky Glen Waterfall is the heart of the preserve. It’s a peaceful cascade surrounded by lush greenery and layered limestone. It’s especially striking in spring and after heavy rains. Many visitors take a break here for photos, picnics, or simply to enjoy the sound of rushing water.
What to Bring
Good shoes: Trails are well-maintained but can be muddy after rain.
Water & snacks: There are no concessions inside the preserve, so stay hydrated and bring a water bottle!
Bug spray & sunscreen: Especially in the summer.
Camera: For wildlife sightings and that perfect waterfall shot!
Rules & Tips
The preserve is open one hour after sunrise to one hour after sunset.
No swimming or wading in the waterfall.
Leashed dogs are welcome, so bring your pup along!
Parking lots can fill up quickly on weekends so arrive early for easier access.
In winter, check conditions before heading out; trails are open for skiing and hiking, but can be icy.
Why Locals Love It
Image Credit: Forest Preserve of DuPage County
Waterfall Glen is a community favorite for a reason. Lemont residents use it as their go-to spot for training runs, family hikes, and quiet nature walks. Its proximity to Lemont Downtown also makes it easy to pair your adventure with a meal, coffee, or shopping trip afterward!
Plan Your Visit
Address: The preserve has multiple access points; the most popular waterfall entrance is near Cass Avenue & Bluff Road.
Parking: Free, available at trailheads.
More Info: Visit Forest Preserve District of DuPage County for maps and seasonal updates.
Whether you’re chasing fall colors, spring wildflowers, or a snowy landscape, Waterfall Glen is worth visiting in every season. Lace up your shoes, grab your camera, and make a day of it, then head back to Lemont Downtown to relax and refuel with our amazing dining options!
