Chicago River Swim Has Returned for Second Year

More than 700 swimmers will compete in the Chicago River to raise money for amyotrophic lateral sclerosis research.

Updated on Sept. 18, 2026 in Swimming

Expressive editorial sports illustration of swimmers in the Chicago River with urban riverbank silhouettes, capturing the motion of an athletic event. — More than 700 participants are competing in the second annual Chicago River Swim to raise funds for amyotrophic lateral sclerosis research. AI Illustration. Upload story photo >

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Would you support opening more local rivers and waterways for public swimming events?

The second annual Chicago River Swim is taking place on the main stem of the Chicago River. Over 700 pre-registered participants are expected to compete in one-mile and two-mile events to support research into amyotrophic lateral sclerosis.

Why it matters

The event provides a unique opportunity to utilize the downtown waterway while generating significant funding for medical research. Scientists have officially confirmed the river water is safe for swimmers to enter.

The event features a Big Jump with over 100 participants, each of whom pledged to raise $500 for medical research. Swimmers will navigate either one-mile or two-mile courses between 6:30 a.m. and 10:30 a.m.

The players

Chicago River Swim

This is an organized athletic event that facilitates swimming in downtown Chicago waterways to raise charitable funds.

The details

The Chicago River Swim utilizes the main stem of the river, which has undergone testing to ensure it meets safety standards for athletic use. Participants must be pre-registered to compete in the race, which is organized to drive awareness and financial support for those battling amyotrophic lateral sclerosis.

September 18, 2026: The Big Jump event is held.
September 20, 2026: The main Chicago River Swim takes place.
6:30 a.m. to 10:30 a.m.: The race operates on Sunday morning.

Season Trajectory

This event marks a growing trend in urban water utilization, effectively repurposing industrial waterways for community health initiatives. It follows a pattern set by previous specialized athletic events aimed at boosting public engagement with city environmental landmarks.

Participating swimmers must complete their chosen one-mile or two-mile distance within the four-hour window allotted for the race. The event requires all athletes to be pre-registered to compete in the main stem of the river.

The takeaway

The successful implementation of this swim demonstrates that urban rivers can be transformed into viable spaces for both recreation and large-scale charity efforts. Residents should check official event schedules for future registration opportunities if they wish to participate in subsequent years.