Participants in the international race enter Lake Michigan at sunrise to begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
On Sunday, participants began the 42nd Chicago Triathlon swimming in Monroe Harbor, followed by cycling along DuSable Lake Shore Drive and finishing their race by running through Columbus Drive. Competitors swam 0.93 miles, cycled 24.85 miles and ran 6.2 miles. The average completion time was 3 hours and 15 minutes.
Participants enter Lake Michigan for the swim portion, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Competitors in the international race prepare to begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
Participants in the international race enter Lake Michigan at sunrise to begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Competitors in the international race prepare to begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Spectators stand for the national anthem, Aug. 24, 2025, before the Chicago Triathlon. (Brian Cassella/baiduhai)
Spectators cheer on participants in the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Competitors in the Chicago Triathlon prepare to begin the swim on Aug. 24, 2025. (Brian Cassella/baiduhai)Competitors in the international race begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
Participants in the international race enter Lake Michigan at sunrise to begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Competitors in the international race prepare to begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Participants in the international race enter Lake Michigan at sunrise to begin the swim, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
A participant swims, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Participants swim in Lake Michigan at sunrise, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Athletes complete the swim and head to the changeover area, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
Athletes complete the swim and head to the changeover area, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Athletes complete the swim and head to the changeover area, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Relay athletes wait for the handover from the swimmers to the bicyclists, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
Athletes bike on DuSable Lake Shore Drive on Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Athletes complete the swim and head to the changeover area, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Spectators cheer on a participant, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
Athletes complete the swim and head to the changeover area, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Participants prepare for their races, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Athletes mount their bicycles to begin the second portion, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
Athletes pass through the changeover area between portions, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)A participant grabs drinks while beginning the running portion, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Athletes pass through the changeover area between portions, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
A Chicago police officer with the bike patrol helps a participant with a flat tire, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Garrett Gehringer finishes the bicycle portion and begins the run, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)Spectators cheer on runners, Aug. 24, 2025, during the Chicago Triathlon. (Brian Cassella/baiduhai)
