We’re NOT going as far south as the “Garden of the Gods”, my favorite spot in Illinois, but to 10 other very enjoyable counties.
Gentle walk around a dammed lake.

https://www2.illinois.gov/dnr/Parks/Pages/LincolnTrail.aspx
Flat to rolling terrain with a small stream.

https://stateparks.com/crawford_county_state_fish_and_wildlife_area_in_illinois.html
Steeper trails along stream valleys.
https://www2.illinois.gov/dnr/Parks/Pages/FoxRidge.aspx
Typical SE Illinois mixed topography.

Local state park.

https://www2.illinois.gov/dnr/Parks/Pages/SamParr.aspx
Natural hills, trails and history. Better than most impounded lake parks.

https://www2.illinois.gov/dnr/Parks/Pages/RedHills.aspx
Large impounded lake with many trails and wildlife.

https://www2.illinois.gov/dnr/Parks/Pages/StephenAForbes.aspx
Bird sanctuary. Short walks.

https://www.ci.olney.il.us/visitors/parks/miller_s_grove.php
Wabash River approaching the Ohio. Old growth woods.

https://www2.illinois.gov/dnr/Parks/Pages/BeallWoods.aspx
Loosely connected properties make up this state forest. Hiking trails connect pine tree plantings, woodlands and streams.

https://www2.illinois.gov/dnr/Parks/Pages/HiddenSprings.aspx