There's the "March to the Arch" which kicks off at 9:11 a.m. at Mike Duffy's Pub and Grill at Highway 141 and Clayton Road.
Event organizer Bo Drochelman will lead participants on a 21-mile walk from there to the Arch. You can take part in the entire walk or join in anywhere along the route. Get more information here.
-- Saint Louis University will hold a 9-11 Memorial and prayer service at 8 p.m. at the Lipic Clock Tower Plaza. The event will honor "Everyday Heroes", like police, firefighters and EMT's who continue to serve and protect.
-- There is a memorial service planned at 8:15 a.m. at the Arnold Recreation Center's 9-11 Memorial Garden. That service will be followed by a free breakfast for first responders.
-- At 8:30 a.m., O'Fallon, MO will hold a "Tribute to First Responders" outside the police department. The event will include a moment of silence for the victims of 9-11 and a playing of "TAPS".