South Platte Renew (SPR) will host its annual River Clean-Up on April 27, 2024, to celebrate Earth Day. Community members are invited to join South Platte Renew and the Cities of Littleton and Englewood in collecting debris and trash along the South Platte River. Start in Littleton at the Mary Carter Greenway Trail at the Riverside Downs parking lot near Pedal Bike Shop or in Englewood at Centennial Park located at 4630 S. Decatur St. on Saturday, April 27, 2024. Participants must register at SouthPlatteRenewCO.gov.