This beautiful 4.3-mile loop adjacent to the Illinois River adds welcome relief--waterfalls, sculpted sandstone canyons, and impressive overlooks--to the usually pancake-flat landscape.

Enjoy the views and solitude of this 9.6 mile out-and-back trek through wind and water-scoured ravines to glacier-carved moraines in southeast Chicago.

This preserve offers plenty of big city escape. Shady forests, gentle waterfalls, and a lofty vista over the Des Plaines River are just a few stops along this 10.1-mile multi-use loop.

Loop 5.7 miles into shaded hollows and up the highest dunes on Lake Michigan's southern shore in Indiana Dunes State Park.

Hike up two mountain peaks with eye-popping vistas on this challenging 7.4-mile off-trail route on the park's lesser-traveled east side.

Hike over three mountain passes into glacier-carved basins with crystalline lakes and bird's-eye views on this 17.6-mile loop. Don't forget your camera.

Pass through some of the wildest land in the Lower 48 on this stout 11.3-mile route that offers a wildlife showcase of grizzlies, mountain lions, moose, and wolverines.

At 9.9 miles, this multi-use loop gently climbs an old logging road crisscrossing Cotton Brook, then moves up the banks of a reservoir with dramatic views of the Worcester Range.

Climb less than 1,000 ft. to craggy overlooks of Lake Willoughby and Mount Pisah on this 8.3-mile out-and-back in Willoughby State Park.

Take advantage of the park's quieter winter season on this 9.4-mile snowshoe trek through wooded hills to an expansive plateau with endless snowy views.