100 mi100K50KHalf Marathon
Shawnee Hills Trail Races
Ozark, Illinois
- Days to go
- 319
At a glance
- Date
- Aug 21–22, 2027
- Location
- Ozark, Illinois
- Distances
- 100 mi, 100K, 50K, Half Marathon
- Registration
- See ultrasignup.com
- Official site
- shawneehills100.weebly.com
- Listed from
- UltraSignup
- Last checked
- Oct 4, 2026
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Build my planAbout this race
A weekend of outdoor and trail running through the beautiful Shawnee National Forest at Camp Ondessonk. The course features stunning rock formations, waterfalls including Pakentuck Falls (the tallest free-falling waterfall in Illinois), and deep sandstone canyon systems.
Key dates
Race day
Aug 21, 2027
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Straight-line distance
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Race planning
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