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

SaSSy in St. Louis (A Sexy and SaSSy Signing Event)
Sat, May 30, 11:00 AM
Saint Charles · St. Charles Convention Center
SaSSy in St. Louis (A Sexy and SaSSy Signing Event)
Sat, May 30, 11:00 AM
Saint Charles · St. Charles Convention Center
Sales end soon
Tongue & Groove | RYSE Nightclub at Ameristar Casino Resort Spa
Sunday at 3:00 PM
Saint Charles · RYSE Nightclub
Sales end soon
Tongue & Groove | RYSE Nightclub at Ameristar Casino Resort Spa
Sunday at 3:00 PM
Saint Charles · RYSE Nightclub
Going fast
Music & Mimosa Festival
Sun, May 31, 2:00 PM
Saint Charles · The Wine Garden
Going fast
Music & Mimosa Festival
Sun, May 31, 2:00 PM
Saint Charles · The Wine Garden
Breakfast in America—A Supertramp Celebration
Fri, Jun 5, 7:00 PM
Chesterfield · Chesterfield Amphitheater
Breakfast in America—A Supertramp Celebration
Fri, Jun 5, 7:00 PM
Chesterfield · Chesterfield Amphitheater
Almost full
5/19 - St. Peters, MO - A Derby Soiree
Tuesday at 7:00 PM
St. Peters · 5300 N Service Rd
Almost full
5/19 - St. Peters, MO - A Derby Soiree
Tuesday at 7:00 PM
St. Peters · 5300 N Service Rd
Going fast
Pickleball with a Purpose: Mind the Gap STL Fundraiser
Sunday at 2:00 PM
Chesterfield · Paddle Up Pickleball Club - Chesterfield
Going fast
Pickleball with a Purpose: Mind the Gap STL Fundraiser
Sunday at 2:00 PM
Chesterfield · Paddle Up Pickleball Club - Chesterfield
Sales end soon
An Evening with Alex Finlay: The Anniversary
Tuesday at 7:00 PM
St. Peters · St. Charles City-County Library, Spencer Road Branch
Sales end soon
An Evening with Alex Finlay: The Anniversary
Tuesday at 7:00 PM
St. Peters · St. Charles City-County Library, Spencer Road Branch
Student Summit
Chesterfield · Undivided Experience Center
Student Summit
Chesterfield · Undivided Experience Center
2026 ILS Athletics Annual Golf Tournament
Mon, Jun 8, 9:00 AM
Saint Charles · Bogey Hills Country Club
2026 ILS Athletics Annual Golf Tournament
Mon, Jun 8, 9:00 AM
Saint Charles · Bogey Hills Country Club
An Evening with New York Times Bestselling Author Lauren Kate| June 10
Wed, Jun 10, 7:00 PM
St. Peters · St. Charles City-County Library, Spencer Road Branch
An Evening with New York Times Bestselling Author Lauren Kate| June 10
Wed, Jun 10, 7:00 PM
St. Peters · St. Charles City-County Library, Spencer Road Branch
2026 GSLCA Golf Tournament- The Best Golf Event of the YEAR!!
Fri, Jun 12, 8:00 AM
O'Fallon · The Falls Golf Club
2026 GSLCA Golf Tournament- The Best Golf Event of the YEAR!!
Fri, Jun 12, 8:00 AM
O'Fallon · The Falls Golf Club
Going fast
Bus To Old Rock House!
Tomorrow at 7:00 PM
Saint Charles · Old Millstream Inn
Going fast
Bus To Old Rock House!
Tomorrow at 7:00 PM
Saint Charles · Old Millstream Inn
Agent STC Presents: K.E.Y. Talks
Thu, May 28, 9:00 AM
St. Peters · Water's Edge Banquet Center
Agent STC Presents: K.E.Y. Talks
Thu, May 28, 9:00 AM
St. Peters · Water's Edge Banquet Center
Sales end soon
Annual Crawfish Boil
Tomorrow at 12:00 PM
Saint Charles · Hendricks BBQ
Sales end soon
Annual Crawfish Boil
Tomorrow at 12:00 PM
Saint Charles · Hendricks BBQ
Almost full
When Life Gives Lemons...Sip Tea
Sunday at 5:00 PM
Saint Charles · Magpie's Restaurant
Almost full
When Life Gives Lemons...Sip Tea
Sunday at 5:00 PM
Saint Charles · Magpie's Restaurant
St. Charles Market Strawberry Festival Jam/Jelly Contest
Sat, May 30, 11:00 AM
Saint Charles · North Main Street
St. Charles Market Strawberry Festival Jam/Jelly Contest
Sat, May 30, 11:00 AM
Saint Charles · North Main Street
Allegro: a St. Louis Choral Community Presents: SONGS OF THE SILVER SCREEN
Sun, May 31, 3:00 PM
Chesterfield · Purser Center at Logan University
Allegro: a St. Louis Choral Community Presents: SONGS OF THE SILVER SCREEN
Sun, May 31, 3:00 PM
Chesterfield · Purser Center at Logan University
Going fast
PAINT & SIP: Pass the Painting Challenge
Mon, Jun 22, 6:00 PM
Cottleville · Frankie Martin's Garden
Going fast
PAINT & SIP: Pass the Painting Challenge
Mon, Jun 22, 6:00 PM
Cottleville · Frankie Martin's Garden
Exclusive Album Preview Party - Dave Kennedy with Rob Snyder
Sat, May 23, 6:30 PM
Saint Charles · The Moonshine Blues Bar
Exclusive Album Preview Party - Dave Kennedy with Rob Snyder
Sat, May 23, 6:30 PM
Saint Charles · The Moonshine Blues Bar
An Evening with Seanan McGuire- INKPOT GODS
Mon, Jun 8, 7:00 PM
Saint Charles · St. Charles City-County Library, Kisker Road Branch
An Evening with Seanan McGuire- INKPOT GODS
Mon, Jun 8, 7:00 PM
Saint Charles · St. Charles City-County Library, Kisker Road Branch

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