Tunnel Hill 100

Tunnel Hill 100 - November 14, 2026

The Tunnel Hill 100 is a premier ultramarathon event held annually, renowned for its fast, crushed limestone course along the Tunnel Hill State Trail in Vienna, Illinois. The event offers multiple distances, including the flagship 100-mile race, a 100km race, a 50-mile race (which also serves as the USATF 50 Mile Road Championships in 2026), and a marathon. The course is known for its minimal elevation gain and smooth terrain, making it ideal for setting personal bests and world records.

Event Details

• Date: Saturday, November 14, 2026
• Start Time: 7:00 AM CT (for all distances)
• Location: Vienna City Park, 302 E. Vine St, Vienna, IL 62995
• Registration Closes: Friday, October 30, 2026, 11:59 PM CT

Distances and Courses

• 100 Miles: Two loops of the 50-mile course.
• 100 km: 50-mile course plus an additional section south.
• 50 Miles: A single out-and-back course on the Tunnel Hill State Trail, starting and finishing at Vienna City Park. This course is certified by USATF and WA.
• Marathon: Certified marathon distance on the same course as other events, starting and finishing at Vienna City Park.

Key Features and Records

• The course has been the site of numerous world and national records, including the 100-mile women's world record (Caitriona Jennings, 12:37:04) and 50-mile world records (Charlie Lawrence, 4:48:21; Courtney Olsen, 5:31:56).
• It is a UTMB Index race and a qualifier for the Western States 100 (for 2028).
• The trail is a crushed limestone surface with a gentle 2% grade, free of major roots or rocks.
• The event is USATF Sanctioned.

Awards and Prize Money

• Prize money is offered for top finishers in various categories, including potential bonuses for world and course records.
• Finisher awards include custom belt buckles for 100-mile, 100km, and 50-mile finishers, and medals for marathon finishers.
• Special buckles are available for those achieving lifetime mileage milestones (500, 1000 miles).

Logistics and Support

• Aid stations are well-stocked with hydration, nutrition, and basic necessities.
• Drop bags are available for runners at designated aid stations.
• Crew access is permitted at aid stations.
• Pacers are allowed for 100-mile, 100km, and 50-mile runners under specific conditions.
• Lodging and camping information is provided for nearby areas.

Important Notes

• No refunds or bib transfers.
• Littering will result in disqualification.
• Runners must comply with USATF and IAU shoe regulations.