Good morning, Belleville.

Members of the Belleville Daughters of the American Revolution rang bells outside the Belleville Courthouse on Sept.

17 at 4 p.m. to celebrate Constitution Day and listen to speeches while students from Legacy Christian Academy answered questions about the Constitution — the group plans a day of service in October and more projects before year-end.

Today, Fairmount Park celebrates its 100th anniversary with the St. Louis Derby—a $250,000 race for 3-year-olds set to start at 5:30 p.m. in Collinsville while cash giveaways and food trucks add to the festivities, and trainer Ken McPeek said his colt Hypnus in an eight-horse field has shown signs of returning to his winning form.

Bulls & Barrels Rodeo

2-3 a.m. — Tri-Township Park — $15+ — Experience a thrilling rodeo with live music, food trucks, and fun activities for the whole family.

Belleville Main Street Marathon

7 a.m. — Downtown Belleville — Registration fee required — Experience America's longest Main Street in a Boston Marathon-qualifying race.

Seinfeld Trivia Night

5-8 p.m. — Shoehorn Brewing — $15/person — Compete in eight rounds of trivia dedicated to the beloved comedy series Seinfeld.

Quail Club Ladies Auxiliary Wurstmarkt

11 AM - 4 PM — Quail Restoration Association — Adults $15, kids $6, under 5 free — Enjoy a delicious Pork Sausage Dinner in a welcoming community setting.

Monthly Meetup at Impact Gaming Center

6-8 p.m. — Impact Gaming Center — Snacks and drinks provided — Connect with other neurodivergent young adults in a friendly environment.

Chili Cook-Off

11 a.m.-7:30 p.m. — Belleville Square — Enjoy delicious chili and beverages at this beloved local food festival.

Trunk or Treat Halloween Celebration

4-7 p.m. — Belleville West High School — Free entry — Enjoy trunk or treating, contests, and health screenings at this family-friendly Halloween event.