RunRace USA › Illinois › Carlyle Lake Triathlon
Carlyle Lake Triathlon
Carlyle Township, Illinois · Sunday, September 20, 2026
Official race page & registration ↗Carlyle Lake Triathlon takes place on Sunday, September 20, 2026 in Carlyle Township, Illinois. For anyone travelling in, O'Fallon is about 29 miles away and St. Louis is about 44 miles away.
It is one of 245 races on the Illinois calendar that September. At $75, entry sits above the $25 median for an Illinois race.
- Date
- Sunday, September 20, 2026
- Location
- Carlyle Township, Illinois
- Entry fee
- from $75
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Carlyle Township: check in Sep 19, out Sep 21.
Common questions
When is Carlyle Lake Triathlon?
Carlyle Lake Triathlon is scheduled for Sunday, September 20, 2026.
Where is Carlyle Lake Triathlon held?
Carlyle Lake Triathlon is held in Carlyle Township, Illinois. It is about 29 miles from O'Fallon and 44 miles from St. Louis.
How much does Carlyle Lake Triathlon cost?
Entry is listed from $75. Check the official race page for the current price, which usually rises closer to race day.
How do I register for Carlyle Lake Triathlon?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
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See every race on the Illinois calendar, or use the Race Finder for maps and filters.