2026 Tunnel Hill 100

Race Information

The Tunnel Hill 100 features a USATF/IAAF sanctioned and certified marathon course and a great place to run a BOSTON QUALIFYING TIME or a personal best. Certification # IL18001BW. The race is presented by Durbin Race Management. You will start at the same start line in Vienna, IL as the Tunnel Hill 100/50, exactly 24 hours after the 100/50 start. You’ll encounter hundreds of runners who are finishing the final miles of their 100 mile run, and everyone will have a great opportunity to cheer each other on as you work your way over dozens of train trestles, and among gorgeous rock formations.

There will be a 6 hour limit, and the race course will close at 1pm on Sunday. LESS

👍 Run Pick of the Month: Milwaukee Lakefront Marathon

📍Milwaukee - October 3-4, 2026

💸 SAVE 10% On Your Entry. Use Code RGMLM26

😄 Why We Like This Run
✅PR-friendly terrain
✅ Incredible community and high-fives at every hydration station
✅ Post-race celebration with local brews, great food, and a lakefront festival that only Milwaukee can throw

Ready to experience one of the most scenic courses in the Midwest? Enjoy a fast, flat, and famously beautiful run along the stunning shores of Lake Michigan. Whether you are aiming for a Boston qualifying time or crossing your first finish line, this race offers the perfect backdrop for your next big achievement.

With options from the 5K through to the Marathon, every mile is designed to keep you moving and inspired.

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