Allerton Races
Race Date
Apr 11, 2026
Location
Monticello, IL
The Experience
Trail/Road Half Marathon, 10K Run/Walk, or nighttime Trail-Glo 5K Run/Walk, benefitting Robert Allerton Park! Trail-Glo 5K start time is 8:30PM 11 April. Half Marathon and 10K start time is 9:00AM 12 April. More race info at our website! Help us help Make-A-Wish families! For our 14th consecutive year, Allerton Races is fundraising for Make-A-Wish Illinois. Be a "Wish Warrior" by donating $10 or more, and you'll get a special logo on the sleeve of your race T! (If you register with a race T) Donate to Make-A-Wish Illinois by clicking HERE!
Logistics
Race Day
Saturday, April 11, 2026
Start Time
9:00 AM
Giveaway
Tech T-Shirt
Start Location
515 Old Timber Rd, Monticello, IL, 61856
Course Info
Course Type
Loop Course
Terrain
road
Difficulty
Ultra-Flat
Elevation Gain
0'
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Quality Score
Standout709 years running
~65 finishers a year
growing or steady
29% returning runners
4 timing sources
runners from 4 states
winner 1:17:52
typical high 64°F
Race Day Weather
5-year historical avgStart (Low)
43°
Afternoon (High)
64°
Pleasant conditions — light layers at start, comfortable by finish
0.1"
Precipitation
15 mph
Wind
61%
Humidity
Historical Finish Times
How 768 finishers actually crossed the line across 9 years.
Most recent
2026
Total finishers
768
Median time
2:19:14
Latest turnout
65
States
11
Turnout by year
2018–2026
Hover the histogram to inspect specific finish times.
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