2026 ET Indoor Triathlon Series

January 25 — February 22 — March 22

Do all three races and win the Indoor Triple Award. Info HERE

Everyone is welcome! No membership is needed. Just sign up!

Bring your family and friends. They will be able to take photos, cheer and even talk to you at various points!

January WAVE start times posted on Jan 23rd

January RESULTS posted by 5pm on Jan 25th

January PHOTOS posted about 1 week after event

$55.00 per race date – if registered at least 30 days before the event.

$65.00 per race date – if registered within 30 days of the event.

We need your help!

Helping with our events is almost as much fun as doing them, and it’s a great way to “give back” to the sport, help other athletes, and support Team ET. We could not do these events without your help.

Volunteer HERE

Event Logistics and Location Address HERE

2026 ET Indoor Triathlon Series

One Hour, Any Skill Level, Have Fun!!

“The ET Indoor tri is such a well run event, and amazingly accessible for a first-timer! I’ve done this race a few times but was joined today by my daughter, and it was such a great experience for both of us. She’s new to the sport, was really nervous leading up to her start, but everyone (coaches to volunteers to other participants) were so supportive and encouraging! The safety net she had around being able to walk in the pool or take a break on the bike gave her the confidence to start, and she didn’t even need it! She’s already asking to participate next year, and this environment makes it easy to share my passion for the sport in an environment that we were both challenged and successful in our goals.” – Sandy G.

“Coach Joe and the rest of the ET crew – thanks for putting on a fabulous event today! It was my first ever tri and everyone was incredibly encouraging. Already looking to see if I can juggle my schedule so I can race again in Feb!” – Beth Y.

“I just wanted to extend a huge thanks to you and all of the volunteers who made today’s experience such a positive one. The team was extremely light-hearted, helpful, and encouraging all around. From adjusting the bikes, to providing water and towels, to ensuring everyone was performing safely within their limits, I was blown away by their tremendous efforts to help the participants in any way they could. I’m very much looking forward to the next indoor tri.” – Mike S.

“I had such a great time today! Thanks so much to my super awesome wave coach for getting me through the event. Also can I just say this event was a great example of how important volunteers are at a race. The encouragement from everyone was awesome! Thanks to all of you for helping to make this a great event. I look forward to the next one in February!” – Allison O.

Experience Triathlon; Experience a Community from Naperville Sports Weekly on Vimeo.

The ET Indoor Triathlon Series presented by Experience Triathlon is a great way to become a triathlete or test your training for the outdoor race season. It’s fun and enjoyed by athletes of all levels – from first-timers to veterans. You set your own pace!

The one-hour event looks like this:

10 minutes of swimming in the lap pool. Our pool is 20 yards long with NO deep end. Athletes can stand at any point. Walking is permitted.
10 minute transition from the pool to the spin bikes
- Note: please leave yourself 3 minutes or so to adjust your seat and get ready to spin. Try and get to the bikes in about 7 minutes after the swim ends.
30 minutes of bike riding on the studio spin bikes
5 minute easy transition from the spin area to the treadmills
20 minutes of treadmill running

2026 High-quality Gildan 50/50 Finisher Shirts!!

Results are measured by how far you go in each of the three events. Volunteers will record your distances.

Each athlete will have their own swim lane. Waves of four athletes will start every 20 minutes starting at 7:00 A.M and continuing until the last athletes are finished. The event can last into the early afternoon depending on the final number of registered athletes.

Please note: Wave start times for each athlete will be posted on this page the Friday prior to the event.

Event Logistics and Information HERE

Location: ET Triathlon Training Center. LifeStart Central Park. 4225 Naperville Rd, Lisle 60532

Note – ET Triathlon Training Center is within LifeStart Fitness Center in the Central Park Business Complex building. Central Park is on the southeast corner of Naperville and Warrenville Roads, just north of I-88. For information related to the event, please contact us at Experience Triathlon.