Fox Valley Winter Challenge Trail Series 10K

🏁 Race Overview

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.

🏞️ Course Details

• Terrain: The course has a little bit of everything: dirt paths, crushed limestone, a few short climbs, and long stretches that test your pacing.
• Challenge: 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.
• Finish Strong: Whether you’re chasing a strong finish or just out to complete the series, this 10K is the perfect way to close it out.

🏅 Finisher Rewards

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.

📅 Sign Up Information

You can sign up 2 or 3 races from any of the race websites, however here are their specific addresses:

• 5K: 5K Registration
• 8K: 8K Registration
• 10K: 10K Registration