There is no race day registration. Prices rise in steps until race day or sellout; the next increase is January 6, 2027. Adult events are open to ages 9 and over.
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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Aquabike | AquabikeSwim 375 m · Bike 13.7 miPool swim | Aug 1, 20277:00 AM | $90 | – |
| Duathlon | DuathlonRun 1 mi · Bike 13.7 mi · Run 3.1 mi | Aug 1, 20277:00 AM | $90 | – |
| Sprint Triathlon | Sprint TriathlonSwim 375 m · Bike 13.7 mi · Run 3.1 miPool swim | Aug 1, 20277:00 AM | $90 | – |
| Sprint Triathlon Relay | Sprint TriathlonSwim 375 m · Bike 13.7 mi · Run 3.1 miPool swim | Aug 1, 20277:00 AM | $105 | – |
| Kids Triathlon (ages 7 to 15) | Kids TriathlonSwim 175 m · Bike 6.8 mi · Run 3.1 miPool swim | Aug 1, 20278:00 AM | $70 | – |
Fees and dates are from the race's official website on the date shown below; confirm them there before you register.
Sunrise on race morning is at about 5:45 AM, and the Aquabike starts at 7:00 AM. The start sits about 690 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Centennial Beach, 500 Jackson Ave, Naperville, IL 60540
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.
Around August 1 the day usually runs from 66°F at dawn to 83°F in the afternoon, with measurable rain on about 29% of days. Cold snaps dip to 60°F and hot years reach 90°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
What athletes should know about Naperville Sprint Triathlon, in brief, from the official race website.
Schedule and packet pickup
Pickup is at Naperville Running Company, 34 West Jefferson Avenue, on Friday, July 30 from 11 am to 6 pm and Saturday, July 31 from 10:30 am to 5 pm. Photo ID is required. Race morning pickup, 5:30 to 6:30 am, is only for athletes who paid a $30 late pickup fee when registering.
Schedule and packet pickup
Transition opens at 5:00 am and closes at 6:45, with swim warm-up from 6:00 to 6:45. The sprint triathlon, duathlon and aquabike start at 7:00 am. The kids triathlon starts at about 8:00 am. Awards are at 9:30 am and bikes must be checked out by 11:00 am.
Parking and travel
Street parking is available in the neighborhoods next to Centennial Park, and there is parking at Naperville Central High School off Aurora Avenue.
Shirt and medal
Pre-registered athletes receive a race T-shirt, a timing tag, food and drinks after the race, and free event photos. Every finisher receives a medal.
Facts on this page come from the race's official website (napervilletri.com, napervilletri.events/registration, napervilletri.events/schedule, napervilletri.events/race-info), checked Oct 7, 2026. Confirm dates and fees there before you travel.
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The 19th Naperville Sprint Triathlon is based at Centennial Beach, where the swim takes place in the Centennial Beach pool. Adults race a 375 meter swim, 22K bike and 5K run, with duathlon, aquabike and relay options. A kids triathlon for ages 7 to 15 follows the same morning.