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Free Events and Things to do in O'Fallon, MO

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Sales end soon
Running Niche Run Club Wednesday 6:30 PM Group Run
Today at 6:30 PM + 40 more
St. Louis · Running Niche
Sales end soon
Running Niche Run Club Wednesday 6:30 PM Group Run
Today at 6:30 PM + 40 more
St. Louis · Running Niche
Betty's Books After Hours
Wed, Apr 15, 6:00 PM
Webster Groves · Betty's Books
Betty's Books After Hours
Wed, Apr 15, 6:00 PM
Webster Groves · Betty's Books
Going fast
2026 STL TechWeek
Mon, Apr 13, 9:00 AM
St. Louis · America's Center Convention Complex
Going fast
2026 STL TechWeek
Mon, Apr 13, 9:00 AM
St. Louis · America's Center Convention Complex
Sales end soon
RESET | The Auntie & Unc Happy Hour
Friday at 5:00 PM
St. Louis · Soul 2 Soul
Sales end soon
RESET | The Auntie & Unc Happy Hour
Friday at 5:00 PM
St. Louis · Soul 2 Soul
Sales end soon
Grown Folks Comedy
Today at 8:00 PM + 40 more
St. Louis · KJ's Bar & Grill
Sales end soon
Grown Folks Comedy
Today at 8:00 PM + 40 more
St. Louis · KJ's Bar & Grill
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Career Pathway
Tomorrow at 6:00 PM + 76 more
St. Louis · CIC St. Louis - 20 S Sarah St.
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Career Pathway
Tomorrow at 6:00 PM + 76 more
St. Louis · CIC St. Louis - 20 S Sarah St.
Sales end soon
Royce's Room | A Piano Concert
Sunday at 5:00 PM
St Louis · The New Ambassador
Sales end soon
Royce's Room | A Piano Concert
Sunday at 5:00 PM
St Louis · The New Ambassador
O’Fallon Community Developing Organization
Sat, May 9, 10:00 AM + 3 more
St. Louis · O'Fallon Park Rec Complex
O’Fallon Community Developing Organization
Sat, May 9, 10:00 AM + 3 more
St. Louis · O'Fallon Park Rec Complex
Going fast
MISSOURI I Can Pray Prayer Rally
Friday at 7:00 PM
St. Louis · Influence Church (South County)
Going fast
MISSOURI I Can Pray Prayer Rally
Friday at 7:00 PM
St. Louis · Influence Church (South County)
Living Room Open Mic
Fri, Apr 3, 5:30 PM + 8 more
Maplewood · Living Room Coffee & Kitchen
Living Room Open Mic
Fri, Apr 3, 5:30 PM + 8 more
Maplewood · Living Room Coffee & Kitchen
Trivia Night
Tue, Apr 7, 6:00 PM + 1 more
Maplewood · Living Room Coffee & Kitchen
Trivia Night
Tue, Apr 7, 6:00 PM + 1 more
Maplewood · Living Room Coffee & Kitchen
The Digital Transformation Summit (STL TechWeek 2026)
Wed, Apr 15, 10:00 AM
Webster Groves · Webster University
The Digital Transformation Summit (STL TechWeek 2026)
Wed, Apr 15, 10:00 AM
Webster Groves · Webster University
Going fast
Black Tech STL: Mixer + Digital Marketplace (STL TechWeek 2026)
Thu, Apr 16, 6:00 PM
St. Louis · The Post Building — St. Louis
Going fast
Black Tech STL: Mixer + Digital Marketplace (STL TechWeek 2026)
Thu, Apr 16, 6:00 PM
St. Louis · The Post Building — St. Louis
The Women of Cypress Lane Book Launch
Thu, May 14, 6:00 PM
Meramec Township · Heritage Weddings & Events
The Women of Cypress Lane Book Launch
Thu, May 14, 6:00 PM
Meramec Township · Heritage Weddings & Events
Nike St. Louis Coach Training
Wed, May 20, 9:00 AM
St. Louis · 4343 W Florissant Ave
Nike St. Louis Coach Training
Wed, May 20, 9:00 AM
St. Louis · 4343 W Florissant Ave
St Louis African Restaurant Week 2025
Thu, May 21, 12:00 PM
St Louis · St Louis
St Louis African Restaurant Week 2025
Thu, May 21, 12:00 PM
St Louis · St Louis
Brick X Brick Collective Monthly Meet Up
Thu, Apr 9, 6:00 PM + 6 more
St. Louis · Invest STL
Brick X Brick Collective Monthly Meet Up
Thu, Apr 9, 6:00 PM + 6 more
St. Louis · Invest STL
GeoNEXT (STL TechWeek 2026)
Wed, Apr 15, 9:00 AM
St. Louis · The Post Building
GeoNEXT (STL TechWeek 2026)
Wed, Apr 15, 9:00 AM
St. Louis · The Post Building
Just added
Webster Groves Garden Club Plant Sale
Fri, Apr 24, 8:00 AM
Webster Groves · Webster Groves Fitness Center
Just added
Webster Groves Garden Club Plant Sale
Fri, Apr 24, 8:00 AM
Webster Groves · Webster Groves Fitness Center
Sales end soon
The Prelude Open Mic
Today at 6:30 PM + 40 more
St. Louis · KJ's Bar & Grill
Sales end soon
The Prelude Open Mic
Today at 6:30 PM + 40 more
St. Louis · KJ's Bar & Grill

Trends in O'Fallon

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Frequently asked questions about O'Fallon

What are the best free events to attend?

According to Eventbrite, the best free events are:

Betty's Books After Hours

2026 STL TechWeek

RESET | The Auntie & Unc Happy Hour

Royce's Room | A Piano Concert

Which events are currently trending in O'Fallon?

The trending searches this month in O'Fallon are:

events happening today near me

Which free events are coming up?

Discover the best free events happening soon – you don't want to miss them:

Running Niche Run Club Wednesday 6:30 PM Group Run

The Prelude Open Mic

Grown Folks Comedy