The final race of the 2026 Winter Challenge Trail Series is here—and it’s the big one. On March 22, we take on a great 10K at Hickory Knolls Discovery Center in St. Charles, wrapping up the series with one last shot at winter trail glory.
The course has a little bit of everything: dirt paths, crushed limestone, a few short climbs, and long stretches that test your pacing. After the 5K and 8K, this race is where it all comes together. It’s longer, it’s tougher, and yeah—your legs are probably going to feel it.
Trail conditions? Total wildcard. Could be slick, could be muddy, could be fast. Either way, you’re earning that finish.
Every runner gets a finisher medal and winter swag. If you’ve completed all three races, you’ll finally get to piece your medal set together and score the bonus gear for finishing the full challenge.
Whether you're chasing a strong finish or just out to complete the series, this 10K is the perfect way to close it out. Show up, push hard, and enjoy the fact that you made it through all three.
You can sign up 2 or 3 races from any of the race websites, however here are their specific addresses:
5K: https://runsignup.com/Race/IL/Batavia/FoxValleyWinterChallengeTrailSeries1
8K: https://runsignup.com/Race/IL/Aurora/FoxValleyWinterChallengeTrailSeries2
10K: https://runsignup.com/Race/IL/StCharles/FoxValleyWinterChallengeTrailSeries3
Mar 22, 2026
Distance — 10K
Type — Running
10:00
$45.00
Mar 22, 2026
Distance — 10K
Type — Running
35 days remaining
$45.00
Mar 22, 2026
Distance — 10K
Type — Running
35 days remaining
$55.00
These values represent the 3-year monthly averages for March in St. Charles.
St. Charles is a city in the Fox River Valley.
Read more launchExplore other exciting events happening in this same region.
location_on Aurora, Illinois, US
calendar_today Feb 21, 2026
location_on East Dundee, Illinois, US
calendar_today Mar 07, 2026
Hand-picked events we think you’ll love.
Nov 21, 2026
The RUN Manatee 5k series offers THREE adventures to celebrate ONE community. Participants will discover Manatee County…
Read more
Nov 28, 2026
Join us for the annual Turkey Trails 5k/10k! A fun, Thanksgiving-themed event that is perfect for the whole family.The…
Read more
Dec 13, 2026
Join us for the annual Candy Cane Course 5k/12k! A fun, Christmas-themed event that is perfect for the whole family.Th…
Read more
Mar 21, 2027
WE ARE NOW OFFERING AN AQUABIKE DIVISION! Triathlon Information:Join us for the annual Space Coast Triathlon, held in …
Read more
