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Illiniwek Abermination 2019

May 5 @ 7:00 am - 5:00 pm

Join FORC for the 5th running of this thrilling off-road bike race!


Register online through USA Cycling. Pre-register and save a few bucks while making things much smoother for yourself and registration volunteers. See below for price breakdown and note a $10 1-day USAC license is required for non-license holders. On race day, registration opens at 7:00 am and closes 45 minutes before each race begins. Online registration closes Friday May 3rd at 10PM.

Race Course

The course consists of a 5 mile loop of wooded singletrack on the Mississippi River bluffs at Illiniwek Forest Preserve in Hampton, IL. These trails are jam packed with flowing corners, large berms, and ripping descents that are sure to please riders of all skill levels! There are also multiple sections of doubletrack per lap to make passing easier. The race course will be marked and available for pre-riding Saturday afternoon before the event..

Kids Race

A kids race will be held around 12:30. The course will be a short loop of nontechnical doubletrack trail and grass field near the start/finish line. All kids 9 and under are encouraged to participate. There are no restrictions on bike type. Registration is required for insurance purposes but is free.


The park is located just North of Hampton, IL on IL-84 or 2.2 miles west (downriver) of I-80 on IL-84 (take the first/last exit entering/exiting Illinois). Trailhead, Sign-up, and Start/Finish area will be located in the large grass field across from the campground/river side of the park. The main race areas should be easily visible from IL-84.

Weather, Trail Closures

This event is dependent on trail conditions and may require rescheduling if we get a lot of rain before the race. If the worst happens, the rain date is Sunday May 20th with all times remaining the same. As the event date approaches we will post weather updates and announce any delays or cancellations by 6AM on the day of the event. The trails at Illiniwek handle rain very well and dry quickly so rain events late in the week may not be a problem.