Fox Valley Winter Challenge Trail Series 10K

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