Chicago triathlon gets Coast Guard no-boat bubble.
Published Date: 8/11/2026
Rule
Summary
On August 23, 2026, from 6 a.m. to 10:30 a.m., a temporary safety zone will be set up in Monroe Harbor, Lake Michigan, Chicago, to keep everyone safe during the Chicago Triathlon swim event. Boats and people can’t enter this area unless the Coast Guard says it’s okay. This quick action helps protect swimmers, vessels, and the environment without any extra costs or delays.
Analyzed Economic Effects
1 provisions identified: 0 benefits, 1 costs, 0 mixed.
Monroe Harbor safety zone closure
You may not enter or operate a vessel in the small rectangle-shaped area of Monroe Harbor in Lake Michigan between 6:00 a.m. and 10:30 a.m. on August 23, 2026, unless the Captain of the Port (COTP) Lake Michigan or a designated representative authorizes entry. The rule lists the exact bounding coordinates for the safety zone and closes the area to all vessel traffic during that time for the Chicago Triathlon swim event.
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