Naperville close

Triathlon Calendar near Naperville 2025-2026

Explore the top triathlons near Naperville for 2025-2026! We've gathered 174 exciting races in the area. Check out our detailed list below to find your next local race.

May 2026
May
3
Sunday

Chicagoland Spring Marathon

10 km 21 km 42 km
May
9
Saturday

Mother's Day Run/Walk - St. Charles

5 km
May
9
Saturday

F^3 Cap Sauers Trail Marathon

Trail Run
May
9
Saturday

Quarryman Challenge

5 km 10 mi
May
9
Saturday

Pink 5k

5 km
May
10
Sunday

Barrington Mother's Day 5K

5 km
May
16
Saturday

Chicago 11 Hour Endurance Run

Backyard Ultra 4 mi
May
17
Sunday

Chicago Spring Half Marathon

10 km 21 km
June 2026
Jun
20
Saturday

1911 Initiative 5k Scholarship Run/Walk

5 km
Jun
27
Saturday

Miles for Maddog

5 km 10 km
Jun
27
Saturday

Run the Runway - Wheeling

5 km
July 2026
Jul
4
Saturday

Warrenville Park District Firecracker 5K

5 km
August 2026
Aug
1
Saturday

College of DuPage Alumni 5k

5 km
Aug
8
Saturday

Raceway 5K

3 km 5 km
Articles
Top 10 Marathons in the Netherlands — The Ultimate Dutch Marathon Bucket List: 10 Unmissable Races
The Beauty of the Easy Run — Why slowing down might be the smartest thing you do for your running
Mizuno Wave Rider 28: Elevating the Legacy of a Running Icon
Garmin Forerunner Review: Garmin Forerunner Series