St. Louis is selected to host the 2028 U.S. Olympic marathon trials, according to reports. The event is expected to determine the first athletes who will represent Team USA at the 2028 Summer Olympics in Los Angeles. NBC News reports that the first six athletes on Team USA for the 2028 Olympics will be determined through the marathon trials in St. Louis. The Winnipeg Free Press similarly reports that St. Louis lands the 2028 U.S. Olympic marathon trials, describing it as the first LA28 selection event. Both outlets frame the announcement as part of the process for selecting U.S. Olympic marathon participants ahead of the Los Angeles Games. Details beyond the location and the selection purpose—such as dates, course specifics, and qualification criteria—are not provided in the excerpts available to this summary. The reports agree on the core point that St. Louis will host the trials and that the event serves as an initial selection step for the 2028 U.S. Olympic marathon team.