Naperville Trails Half Marathon & 10K
Naperville Trails Half Marathon offers a flat, fast course through scenic forest preserve trails.
Race Date
Sep 5, 2026
Location
Wheaton, IL
Quick facts
- Date
- Saturday, September 5, 2026
- Location
- Wheaton, Illinois
- Distance
- Half marathon (13.1 mi) + 10K, 13.1 Miles
- Course
- Loop Course
- Terrain
- Trail
- USATF certified
- Yes
- Finishers on record
- 9,306
Highlights
Good For
Atmosphere
Course
The Experience
The Naperville Trails Half Marathon winds through the crushed limestone paths of Danada Forest Preserve. This USATF-certified course is known for its flat profile, with minimal elevation gain or loss, making it a prime candidate for setting personal bests.
Runners typically experience mild race-day conditions, with average temperatures in the high 60s Fahrenheit. The event, first run in 2010 and now in its 16th edition, draws participants from around 14 states. With a median field size of approximately 508 finishers and a growing trend, it offers a solid race-day atmosphere. The ~16% repeat-runner rate speaks to its enduring appeal among those seeking a well-organized trail race.
Race-provided description
Naperville Trails Half Marathon & 10K - 9/05/2026 Wheaton, IL #NapervilleTrailsHalf // #NapervilleTrails10K Event times, dates, location and all other details are subject to change prior to event. All official information is on the event's website AllCommunityEvents.com.
Logistics
Race Day
Saturday, September 5, 2026
Start Time
8:00 AM
Giveaway
Event Shirt
Start Location
3S580 Naperville Rd, Wheaton, IL, 60563
Course Info
USATF CertifiedCourse Type
Loop Course
Terrain
trail
Scenery
Forest
Surface
Dirt Trail
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
USATF Certified Course
IL25036NM · Naperville Trails Half Marathon
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Quality Score
Standout7917 years running
~525 finishers a year
growing or steady
15% returning runners
USATF certified · 5 timing sources · 5 photos
runners from 19 states
winner 1:17:42
typical high 77°F
Race Day Weather
5-year historical avgStart (Low)
59°
Afternoon (High)
77°
Warm — hydration strategy is key, start conservatively
0.1"
Precipitation
11 mph
Wind
68%
Humidity
Historical Finish Times
How 9,306 finishers actually crossed the line across 17 years.
Most recent
2026
Total finishers
9,306
Median time
2:26:46
Latest turnout
525
States
36
Turnout by year
2019–2026
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the Naperville Trails Half Marathon & 10K?
The Naperville Trails Half Marathon & 10K is held on Saturday, September 5, 2026, starting at 8:00 AM.
Where does the Naperville Trails Half Marathon & 10K take place?
It takes place in Wheaton, Illinois.
What distances does the Naperville Trails Half Marathon & 10K offer?
The half marathon (13.1 miles), plus 10K, 13.1 Miles.
Is the Naperville Trails Half Marathon & 10K course flat and good for a PR?
The Naperville Trails Half Marathon & 10K is a ultra-flat, loop course course. The course is USATF-certified, so finish times can be used for qualifying.
How many people run the Naperville Trails Half Marathon & 10K?
HalfRuns has finish records for 9,306 runners who have completed the Naperville Trails Half Marathon & 10K.
HalfRuns editorial — independent, no paid placement.
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