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Hardin Ridge Trail

Hoosier National Forest, Indiana · 3 min read

Distance
4.8 mi
Elevation Gain
320 ft
Difficulty
moderate
Route Type
Loop
Best Season
April through October
Dog Friendly
Yes
Difficulty Score
5 / 10

Trailhead Amenities

Restroom
Flush Restroom
Parking
Fee Required
Cell Service
Limited
Water
At Trailhead
Camping
Developed
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Conditions, regulations, and fees change frequently. Verify with the local ranger district before your trip. Full disclaimer

At a Glance

  • Monroe Lake shoreline: largest lake in Indiana at 10,750 acres
  • Forest trail connecting campground to lake viewpoints
  • Good bald eagle viewing from the lake shore
  • Spring wildflowers in the upland hardwood forest
  • Access to the largest developed recreation area in Hoosier NF

Overview

The Hardin Ridge Trail connects the large developed campground at the Hardin Ridge Recreation Area to the Monroe Lake shoreline on a 4.8-mile loop through mixed hardwood forest. Monroe Lake: at 10,750 acres, the largest lake in Indiana: provides a dramatic backdrop for the shoreline sections of the route, and the USFS-managed north shore area is the most popular recreation site in Hoosier National Forest.

The trail is the best option for campers at Hardin Ridge who want a forest walk in addition to the lake recreation, and it gives day visitors a reason to explore beyond the beach and picnic area.

The Route

Miles 0.0 to 1.2: Campground Forest Section

From the Hardin Ridge parking area, the trail enters the mixed hardwood forest on the ridge above the lake. The forest here is a mix of oak, hickory, tulip poplar, and maple: typical northern Hoosier forest composition. The trail is well-maintained compared to the wilder southern unit trails. Spring wildflowers: trillium, wild blue phlox, and trout lily: bloom in the understory in April and May.

Miles 1.2 to 2.8: Lake Shore

The trail descends to the Monroe Lake shoreline and follows the north shore east and west of the access points. The lake views here are the widest available from shore: the main basin extends several miles, with the southern shore visible in the distance. Bald eagles hunt the shallows regularly, and ospreys are present in summer. The shoreline sections are rocky and the footing requires attention.

Miles 2.8 to 4.8: Ridge Return

The trail climbs back to the ridge level through the hardwood and returns to the campground area. A junction near mile 3.5 allows a shorter return or an extension deeper into the campground forest section.

When to Hike

April through June: Spring wildflowers in the upland sections. Eagle and osprey active on the lake. Campground less crowded than summer.

July and August: Peak season for lake recreation. Campground fills on summer weekends. The trail provides a quieter alternative to the busy beach area.

October: Fall color and quiet. Hardin Ridge is peaceful after Labor Day.

What to Bring

Water is available at Hardin Ridge facilities. A day-use fee vehicle pass or America the Beautiful Annual Pass. Binoculars for lake birding. Light footwear is adequate for the maintained trail sections near the campground; the rocky shoreline sections benefit from sturdier shoes.

Trailhead Access

Hardin Ridge Recreation Area is on Hardin Ridge Road south of Bloomington. The road is paved. Flush toilets and water at the recreation area. Campground is reservable through Recreation.gov. America the Beautiful Annual Pass covers day-use fees. Dogs welcome on leash. No additional trail permit required (as of 2026).

Nearby

The Pioneer Mothers Memorial Forest Loop is about 30 miles south in the Lawrence County unit and is the most ecologically significant short walk in the forest. The Hemlock Cliffs Trail is about an hour south and is the forest's signature canyon hike. Check current conditions for campground availability and trail status, and review Leave No Trace principles.

Trailhead Parking

Paved lot at Hardin Ridge Recreation Area. Day-use fee required; America the Beautiful Pass accepted. Campground road paved.

← Back to Hoosier National Forest

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Frequently Asked Questions

What is the day-use fee at Hardin Ridge?
A day-use vehicle fee is required at Hardin Ridge Recreation Area (as of 2026). The America the Beautiful Annual Pass covers the fee. Without a pass, expect a per-vehicle charge: check the current fee schedule at recreation.gov or the USFS Hoosier website.
Can I see the full lake from the trail?
The trail reaches the Monroe Lake shoreline at several points with broad open water views. Monroe Lake is 10,750 acres: the largest lake in Indiana: and the views across the main basin are expansive.
Is Monroe Lake part of Hoosier National Forest?
The Hardin Ridge section of Monroe Lake's north shore is managed by the USFS as part of Hoosier National Forest. The rest of the lake and its southern shoreline are managed by the Army Corps of Engineers and Monroe County.