CORE Indoor Sprint Triathlon

MAR
14
2026
Test your speed at the CORE Indoor Sprint Triathlon in Lemont with timed swim, spin bike and treadmill segments in small 20 minute heats. Awards, participant shirt and limited spots make early registration smart.
Sat 14 Mar 2026
Swim (10 Minutes) Run (15 Minutes on Precor... Bike (15 Minutes on Keise...

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Event details

The CORE Indoor Sprint Triathlon takes place in Lemont, IL at the CORE Fitness and Aquatic Complex, 16050 127th St. Each athlete completes three timed segments and total distance is measured at the end. Heats run in 20-minute increments with 4 to 5 people per heat.

Distances and equipment

  • 10 minutes swim
  • 15 minutes bike (Keiser Spin Bike)
  • 15 minutes run (Precor Treadmill)

Awards are given to the overall event winners and to the 1st and 2nd place male and female finishers in each age division. An awards ceremony follows the final heat.

Registration and logistics

The event capacity is 60. Registration closes on March 11 or when capacity is reached. There is no race-day registration. Price is $40; the price increases after February 1, 2026. Open to ages 14 to 100. Participants receive an event t-shirt at check in; arriving 30 minutes before an assigned heat time is requested.

Participants should bring a swimsuit, towel, lock, athletic shoes for bike and run, and any personal fluids or gels. The CORE is not responsible for lost or stolen items. Parking is available on the Lemont Park District campus and adjacent at Old Quarry Middle School; parking may be limited due to concurrent basketball events. Visit the organization's website for the most recent information.

Run (15 Minutes on Precor Treadmill)
Swim (10 Minutes)
Bike (15 Minutes on Keiser Spin Bike)