Carlyle Lake Triathlon

SEP
20
2026
Experience a beach start at Illinois largest man made lake followed by a flat bike course and a finish over the dam spillway. This event offers individual and relay options across triathlon duathlon and aquabike distances.
Sun 20 Sep 2026
Sprint Relay Tri (run) Sprint Individual Tri (ru... Sprint High School Tri (r... Sprint Duathlon (runs) Olympic Individual Tri (r...

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Event Overview

The Carlyle Lake Triathlon takes place in Carlyle Township, Illinois. Organized in partnership with the City of Carlyle and the US Army Corps of Engineers, the event is held at the largest man-made lake in the state. Participants start the race with a beach entry for the swim portion in Carlyle Lake.

The bike course is designed as a flat route across the Illinois plains. The final running segment follows rolling country roads and concludes by crossing the spillway, which provides a view of the water and the dam. The event features several multi-sport disciplines, including triathlons, duathlons, and aquabike categories.

Available Distances

The event offers varied distances and formats for individual participants and relay teams:

  • Olympic Triathlon: 1.5 km swim, 40 km bike, and 10 km run.
  • Sprint Triathlon: 750 m swim, 20 km bike, and 5 km run.
  • Olympic Duathlon: 5 km run, 40 km bike, and 10 km run.
  • Sprint Duathlon: 3 km run, 20 km bike, and 5 km run.
  • Olympic Aquabike: 1.5 km swim and 40 km bike.
  • Sprint Aquabike: 750 m swim and 20 km bike.

Participation Details

The triathlon includes a dedicated Sprint High School category. All participants are required to present a photo ID and must pick up their race packets in person. The transition area and event facilities are located at 801 Lake Road in Carlyle. Visit the organization's website for the most recent information.

15 km
Olympic Duathlon (runs)
10 km
Olympic Individual Tri (run)
10 km
Olympic Relay Tri (run)
8 km
Sprint Duathlon (runs)
5 km
Sprint Relay Tri (run)
5 km
Sprint Individual Tri (run)
5 km
Sprint High School Tri (run)