Earth Day 50K - Crystal Lake

APR
17
2027
Trail trail race in Crystal Lake on April 17, 2027 offering 50K, 15 mile and 5 mile options on a 5 mile loop with aid station and age group awards.
Sat 17 Apr 2027
50 kilometers 15 miles 5 miles

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About the race

Earth Day 50k/15 Mile/5 Mile is scheduled for April 17, 2027 in Crystal Lake, Illinois, and is organized by Ornery Mule Racing. The event base is Veterans Acres, 431 N. Walkup, Crystal Lake, IL 60014.

Distances

  • 50K
  • 15 Mile
  • 5 Mile

The course is organized as a 5 mile loop with single track and rolling hills. The race is set up as a PR trail race; all distances start together and the route leaves a ball field to run around a pond before entering single track. There is one major aid station at the start/finish that will provide homemade items and typical ultra food including cookies, PB & J, sports drink, soda, chips, and pretzels. Participants are encouraged to bring their own water bottle as the organizers are working toward a landfill free event. The maximum time to complete the 50K is eight hours.

Awards include 1st overall male and female and age group awards for men and women in these categories: Under 29, 30-39, 40-49, 50-59, 60+. Packet pickup locations include Ornery Mule Racing Trailhead at 824 S. Main Street and a race day pavilion near the main parking lot.

Pricing follows a tiered schedule with early bird and later increases. Registration closes April 15, 2027 at 11:59 PM CT. Refunds are not offered; rollover and transfer options are available under specified deadlines and volunteer rollover credit is offered for last minute changes. Visit the organization's website for the most recent information.

Events nearby

Trail running at Camp Big Timber on November 8, 2026 with 3 and 5 mile courses, a creek crossing, kids run, awards, pancake breakfast and proceeds to local scouts.
A 3-mile cross country meet at the MacNider course in Schaumburg on November 8, 2026, with separate men's and women's races and an optional team competition.
A scenic 5K in Deer Grove on November 14, 2026 that welcomes runners, walkers and canicross teams while raising funds for a local scholarship.
Winter trail race in Crystal Lake, IL featuring a hilly single-track 10K loop and a 50K made of five laps, with aid stations, finisher medals, and age-group awards.
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