Allerton Races

Monticello, United States • 12 Apr 2026

Allerton Races

Allerton Races takes place on Saturday April 11 and Sunday April 12, 2026, in Monticello, Illinois. The event offers both in-person and virtual options and includes trail and road formats. In-person options feature a trail/road half marathon, a 10K run/walk, and a nighttime Trail-Glo 5K run/walk. The venue is listed as 515 Old Timber Rd, Monticello, IL 61856.

The event supports local and charitable causes. It benefits Robert Allerton Park and, for the 14th consecutive year, raises funds for Make-A-Wish Illinois. Participants who donate $10 or more receive a special logo on the sleeve of the race T if they register with a race T. The program includes both standard and virtual versions of the distances below. Visit the organization's website for the most recent information.

  • Half Marathon
  • 10K Run/Walk
  • Trail-Glo 5K Run/Walk (nighttime)
  • VIRTUAL Half Marathon
  • VIRTUAL 10K
  • VIRTUAL 5K

Race information

Half Marathon
Half Marathon
10 km
10k
5 km
Trail-Glo 5k
Virtual Half Marathon
Virtual 5k
Virtual 10k
Visit the organization's website for the most recent information.
Trail runs nearby

Clinton Lake Ultra on March 28, 2026 in DeWitt, IL features a 30 mile and a 10 mile trail race on three 10 mile loops, two aid stations per loop, mandatory volunteer service, race awards, and event swag.

Run fast rolling trails at Sand Creek in Decatur on Sept 12 and choose 4.4 or 7.6 miles for a lively trail challenge. Get a tech shirt and finisher medal while supporting the Special Operations Warrior Foundation.

A trail event at Robert Allerton Park in Monticello on October 25, 2026, featuring a 5.7 mile run, a 2 mile nature walk, and a virtual 5.7 mile option. A portion of proceeds supports park trail maintenance and improvements.