from Free
RegisterIllinois race calendar
Triathlons and bike races in Illinois
29 upcoming races across 24 cities in Illinois, from first-timer sprint triathlons to half iron races, duathlons, and gravel rides. Dates, distances, and entry fees come straight from race registration and refresh every night.
29
upcoming races
1
this weekend
24
cities
16
triathlons
By distance
By month
Triathlons near
Next up in Illinois
The 29 soonest races. Pick a month or distance above for the full list.
November 2026
Cyclocross for Everyone! -- 11/21/2026 -- Cyclocross for Business
Chicago, Illinois10:00 AM start
from Free
RegisterJanuary 2027
February 2027
March 2027
April 2027
from $55
RegisterMay 2027
from $29.99
Register
from $30
RegisterLake Lou Yaeger Triathlon
Litchfield, Illinois7:00 AM startOpen water swim
from $75
RegisterJune 2027
from Free
Register
from $25
RegisterTri-Shark Classic Triathlon & Duathlon
Hudson, Illinois8:00 AM startOpen water swim
from $79
Register
from Free
Registerfrom $199.99
RegisterTremont Triathlon
Tremont, Illinois7:00 AM startPool swim
from $40
RegisterJuly 2027
Lake Zurich Triathlon
Lake Zurich, Illinois6:45 AM startOpen water swim
from Free
RegisterLake Springfield Triathlon
Springfield, Illinois7:00 AM startOpen water swim
from $75
RegisterAugust 2027
from $30
RegisterNaperville Sprint Triathlon
Naperville, Illinois7:00 AM startPool swim
from $70
Register
from Free
Register
from $55
Register
from $65
RegisterSupertri Chicago Triathlon
Chicago, IllinoisOpen water swim
September 2027
from $35
RegisterOctober 2027
from $50
Register