Illinois · 100 Miler · 100 km · USATF 50Mi Nat. Champ.
Tunnel Hill 100
Tunnel Hill 100 is a 100 Miler, 100 km, USATF 50Mi Nat. Champ., 50 Miler and marathon event held in Vienna, Illinois. Its next confirmed date is Saturday, November 14, 2026. About 94 runners take part across all distances.
- Race day
- November 14, 2026
- Location
- Vienna, IL
- Field size
- ~94 runners
Race details
- Date
- Saturday, November 14, 2026
- Location
- Vienna, Illinois
- Distances
- 100 Miler, 100 km, USATF 50Mi Nat. Champ., 50 Miler, Marathon
- Field size
- About 94 runners
- Course
- Very flat rail-trail, 340-680 ft elevation range, max grade ~2%
- Registration
- ultrasignup.com
- Official website
- durbinracemanagement.com
Registration, course & weather
- Registration status
- Open
- Entry fee
- Listed fee for the longest distance, $135 (from tunnelhill100.com, checked September 25, 2026)
- Start time
- 7:00 AM CST
- Course profile — Marathon
- Out-and-back course; Mostly trail, some road; 100 ft gain, 100 ft loss (official course data); USATF certified; Boston qualifier
- Course profile — 100 Miler
- Out-and-back course; Mostly trail, some road; 1800 ft gain, 1800 ft loss (official course data); USATF certified
About the Tunnel Hill 100
Tunnel Hill 100 is a flat, fast ultramarathon festival on the crushed-limestone Tunnel Hill State Trail through the Shawnee National Forest, offering 100 Mile, 100km, 50 Mile (2026 USATF 50 Mile Championship), and Marathon distances that all start and finish together at Vienna City Park.
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Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Tunnel Hill 100: common questions
- When is the Tunnel Hill 100?
- The next confirmed date is Saturday, November 14, 2026.
- Where is the Tunnel Hill 100 held?
- In Vienna, Illinois.
- What distances does the Tunnel Hill 100 offer?
- 100 Miler, 100 km, USATF 50Mi Nat. Champ., 50 Miler and Marathon.
- How many people run the Tunnel Hill 100?
- About 94 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Tunnel Hill 100?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Tunnel Hill 100?
- Yes — registration is open. Listed fee for the longest distance, $135 (from tunnelhill100.com, checked September 25, 2026).
- What time does the Tunnel Hill 100 start?
- 7:00 AM CST.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.