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United States
Illinois

Union County

The best walks and hikes in Union County

4.8

(8)

118

hikers

13

hikes

Hiking in Union County, Illinois, navigates the varied landscapes of the Shawnee National Forest. The region is characterized by sandstone bluffs, dense woodlands, and creek-carved canyons. The trail network offers routes that explore these natural features, with options for different hiking abilities. The area features deep forests and rolling hills, providing a serene backdrop for outdoor activities.

Best hiking trails in Union County

  • The most popular hiking route is Red Cedar Trail Loop — Giant City State Park, an…

Last updated: June 23, 2026

4.3

(3)

34

hikers

#1.

Giant City Nature Trail

1.87km

00:31

40m

30m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

2

hikers

4.85km

01:19

70m

70m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

737m

00:11

0m

10m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

90.2km

22:58

270m

250m

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

Hard

5.0

(1)

4

hikers

17.9km

04:54

280m

280m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Popular around Union County

Hiking in Panther Den Wilderness

River to River Trail — A patchwork journey across Illinois

Road Cycling Routes in Union County

Cycling in Union County

Running Trails in Union County

Other adventures in Union County

River to River Trail — A patchwork journey across Illinois

Hiking Collection by

Lisa

Tips from the Community

Scottrod
May 24, 2026, Tunnel Hill - Main Brothers Campground

This campground is perfectly situated next to, some sites are almost on the trail, the Tunnel Hill trail. The campground is clean and well maintained and all sites have electric. handy for charging up all your electronics at the end of the day. Water is also available. bathrooms are pit style and one negative would be lack of a shower house. Great place to stay if you are riding the entire Tunnel Hill trail.

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Lisa
December 3, 2025, Alto Pass

Alto Pass is a pretty little town on the River to River Trail. It has great views and a little country store. Here (at the intersection of Chestnut & Main) you're in the perfect spot to hike northeast or west on the River to River Trail, or you can hike the Quetil Trail, just southeast of here, to a bluff overlook.

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Lisa
November 24, 2025, Panther Den Wilderness

Panther Den Wilderness is a spectacular mix of forest and massive, building-sized chunks of rock with narrow walkways between them. You can primitive camp anywhere in the wilderness as long as you stay out of designated natural or research areas, which should be marked with yellow posts. The area around here can be especially convenient because of its proximity to the creek for water; keep an eye out for old fire rings so you won't have to build one.

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The Cache Wetlands center is the couthern terminus for the tunnel Hill Trail. The Barkahausen Wetlands center is a world class research facility and educational facility.

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Karnak is not the end of trail but it is the last point on the trail to camp. The Main Brothers camp ground is pretty simple but it is the only campground at the south end of the trail. The campground is clean and in the main campground there are spots for tents.

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Belknap is another one of the towns that was made by the rail road and died by the rail road. If you need a saw, there is a custom saw builder.

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Vienna is the trail HQ as well as the adjacent city park and rail museum. There is water, flush toilets, 2 museums and a beautiful park all right there. There is a trail into downtown where there is a great little place to eat called Neds Shed. Camping is available just east of the trail at the Shawnee Forest Campground. There is a recently ( 2025 ) completed concrete bike path from the trail east to the fast food restaraunts and then onto the shawnee forest campground. lots of Fast food available, a local diner, and a mexican restaraunt along this eastern extension.

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This is the longest and highest trestle on the trail over 300 feet above the valley below.

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Frequently Asked Questions

Are there any easy, family-friendly hikes in Union County?

Yes, the area offers trails suitable for families and those looking for a less strenuous walk. For a great option, consider the Panther Den Wilderness loop from Goreville. It's a relatively short and easy route that allows you to experience the region's natural beauty without a major time commitment.

What are the defining natural features of hikes in Union County?

Hiking in this part of Illinois is characterized by the dramatic landscapes of the Shawnee National Forest. You can expect to encounter impressive sandstone bluffs, deep, creek-carved canyons, and dense hardwood forests. Many trails are designed to showcase these unique geological formations.

Are there any challenging hikes for more experienced hikers?

For those seeking a more demanding trek, the Red Cedar Trail Loop — Giant City State Park offers a significant challenge. At nearly 18 km, it's a long route that requires good stamina and will take several hours to complete, rewarding you with an extensive tour of the park's varied terrain.

Can I find loop trails in the area?

Absolutely. Most of the popular trails in Union County are designed as loops, which is convenient for hikers as they start and end in the same location. A great example is the Little Grand Canyon Loop — Shawnee National Forest, which takes you through a stunning canyon and back to your starting point.

What do other hikers think of the trails in Union County?

The trails in Union County are very highly rated by the komoot community, with an average score of 5.0 stars. Hikers often praise the unique sandstone canyons and the well-maintained paths through the dense forests of the Shawnee National Forest.

What kind of wildlife might I see while hiking?

The dense woodlands and protected areas of the Shawnee National Forest are home to a variety of wildlife. While hiking, keep an eye out for white-tailed deer, wild turkeys, and a wide array of bird species. The forests provide a rich habitat, so quiet observation can be very rewarding.

Are the trails suitable for trail running?

Many of the hiking trails can also be used for trail running, especially for those who enjoy a challenge. Routes like the Ferne Clyffe State Park loop from Goreville offer a mix of terrain with moderate elevation changes that can make for an excellent run through the forest.

What is the best time of year to hike in Union County?

Spring and fall are generally considered the best times to hike here. In spring, the forests come alive with wildflowers and budding trees. Autumn offers spectacular fall foliage and cooler, more comfortable hiking temperatures. Summer can be hot and humid, while winter may bring icy conditions on some trails.

How difficult are the trails in the region?

Union County offers a good mix of difficulties. There are easy trails that are mostly flat and under 5 km, perfect for beginners. The majority of routes are rated as moderate, involving some elevation gain and uneven terrain over longer distances. There are also more strenuous options for experienced hikers looking for a full-day adventure.

Are there any specific safety considerations for hiking here?

When hiking, especially in canyon areas, be aware that trails can become slippery, particularly after rain. It's important to wear sturdy hiking shoes with good grip. Always carry enough water, as some of the longer trails are quite exposed. Also, check the weather forecast before you head out, as conditions can change.

Most popular routes in Union County

Easy hikes in Union County

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