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Outdoor activitiesin O Fallon, Illinois

Discover outdoor activities in O Fallon with Meetup. Whatever your interest, Meetup helps you connect with like-minded people.

Hiking

Carlyle Lake - Boulder Campground COE

Hosted by: Comfort Camping Club

32 going
Free
Carlyle Lake - Boulder Campground COE

Ladies Who Hike: Coffee Hour ☕️

Hosted by: Vibrant Trails STL (hiking group, women ages 30-45)

6 going
Free
Ladies Who Hike: Coffee Hour ☕️

Smoky Mountain Boots and Roots Hiking

Hosted by: Explorer Chicks of Saint Louis

1 going
Free
Smoky Mountain Boots and Roots Hiking

10/2/25 Afternoon: Forest Park Hike/Ruck and Social

Hosted by: Medallion Hiking, Adventure, and Books

48 going
Free
10/2/25 Afternoon: Forest Park Hike/Ruck and Social