Race Discovery
Open Water Swim CHICAGO
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2025 - Open Water Swim CHICAGO

Chicago, Illinois, United States View on map
May 03, 2025 – Aug 19, 2025 (America/Chicago local time)
Running

2025 distances

Running

Gear Swap - Attendee (TBD)

* Details for the 2024 Gear Swap are TBD * The Gear Swap is Chicago's only tri-specific garage sale where new and veteran triathletes can exchange, buy or sell their used multisport gear with ease. Full details and exact location will be communicated soon.

May 03, 2025 Gear Swap - Attendee (TBD) 8:00 AM
Free
Closed

Gear Swap - Seller (TBD)

* Details for the 2024 Gear Swap are TBD * The Gear Swap is Chicago's only tri-specific garage sale where new and veteran triathletes can exchange, buy or sell their used multisport gear with ease. Full details and exact location will be communicated soon.

May 03, 2025 Gear Swap - Seller (TBD) 8:00 AM
$10.00
Closed

Clean-Up Volunteer (TBD)

* Details for the 2024 season are still TBD. * Join the entire endurance community as we beautify Ohio Street Beach before the swim season begins. In tandem with our friends at the Chicago Park District, volunteers will pick-up debris from the beach and adjacent parkland, as well as remove various objects from the water. Water and snacks will be available. Tools and rubber gloves will be provided (personal work gloves are highly recommended). Volunteers must RSVP in advance. Full details will be distributed prior to the event.

May 03, 2025 Clean-Up Volunteer (TBD) 8:00 AM
Free
Closed

Race-day weather

Conditions on May 3, 2025 — historical Open-Meteo data.

Temp (°C)
Minimum temperature (recorded on race day) 17.0° / Maximum temperature (recorded on race day) 25.1°
Feels Like (°C)
Minimum feels like — heat index / wind chill (recorded on race day) 16.5° / Maximum feels like — heat index / wind chill (recorded on race day) 28.1°
Peak wind (km/h)
Strongest wind of the day (recorded on race day)
15.7
Precip (mm)
Precipitation over the day (recorded on race day)
2.9mm
Humidity
Mean relative humidity (recorded on race day)
73.6%
Sunrise
Sunrise at the start line on May 3, 2025 (CDT)
Sunset
Sunset at the start line on May 3, 2025 (CDT)
Daylight
Hours between sunrise and sunset on race day
14h 08m

The sun rises at 5:43 AM and sets at 7:51 PM local time (CDT) in Chicago on May 3, 2025 — 14h 08m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 149 Chicago events

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