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Marathons in Naperville, Illinois
2 upcoming marathons listed in Naperville. Next: Endeavor Health Naperville Half Marathon, 10K & 5K on October 18, 2026.
2marathons upcoming
Napervillecity
October 18, 2026Next race
Marathon, Half marathon, 10K, 5Kdistances
Naperville, Illinois, United States
18OCT
21.1K
Endeavor Health Naperville Half Marathon, 10K & 5K
Naperville, Illinois, United States
Certified
Naperville, Illinois, United States
01NOV
42.2K
Naperville Marathon & Half Marathon
Naperville, Illinois, United States
BQ Qualifier
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Planning notes for Naperville, Illinois, United States
Use this city page to shortlist 2 upcoming races by date, distance, registration path, and official source.
- Next raceEndeavor Health Naperville Half Marathon, 10K & 5K on October 18, 2026
- Busy monthsNovember (1), October (1)
- DistancesMarathon, Half marathon, 10K, 5K
- VerifyOpen each race page, then confirm details from its official, registration, course-map, or source link.