O’Fallon Farmers and Artists Market - Every Saturday through October 16th from  7:00 a.m – 12:00 p.m.  Wednesdays from June 16 – September 13 from 3:00 – 7:00 p.m. Located at Rascals Stadium, 900 TR Hughes Blvd., O’Fallon, MO.

O’Fallon Jammin – Concert series every Tuesday night from June 1 – August 24th.  Free concerts from 5:30 – 8:30 p.m. at O’Fallon’s Civic Park Bandstand. 

Live Well Expo – Free event with health screenings, nutritional information, a kids’ zone and healthy lifestyle vendors.  Saturday, June 5th from 10 a.m. to 4:00 p.m. at the Renaud Spirit Center in O’Fallon.

 Movie in the Park – Free event on June 24th from 8:00 – 11:00 p.m. at Renaud Spirit Center in O’Fallon.  Pre-registration is required.  Call 636-474-2732 for more information.

 O’Fallon Heritage and Freedom Fest – Free 4th of July celebration at Ozzie Smith Sports Complex, 900 TR Hughes Blvd, O’Fallon, MO.  Festivities begin with a family night on Friday, July 2nd from 5:00 – 9:00 p.m.  Events and entertainment continue on Saturday, July 3rd and Sunday, July 4th.  Parking and admission are free. 

Alligator’s Creek Triathlon - August 15th at Alligator’s Creek Aquatic Center, 305 Civic Park Drive in O’Fallon, MO.  Triathlon consists of 300 yard swim, 18 mile bike and 5K run.