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MULTIDAYRUNNING
Fixed-DistanceSimpler Logistics

Tunnel Hill 100

A flat, fast 100-mile rail-trail race on crushed limestone with a maximum grade of about 2% and a record-focused reputation.

Official WebsiteBack to Events

Event dates, entry rules, qualification standards, and course details can change. Always verify current information on the official event website before registering or booking travel.

Event Overview

Listed edition overview
DateNov 14-15, 2026
LocationVienna, Illinois, USA
FormatFixed-Distance
TerrainTrail
RegionNorth America
Distance100 mi
State / areaIllinois (IL)
Course modelOut-and-back
Cutoff30 hours
Start7:00 AM Saturday
HighlightsRail Trail, Record-Focused Course

Course & Terrain

Fast out-and-back rail-trail course centered on the Tunnel Hill State Trail near Vienna.

Entry & Logistics

Listed qualification and support details
Registration and feesCheck the official event website for current availability, deadlines, prices, taxes, and refund terms.

Why This Race Matters

Tunnel Hill 100 is a useful reference point for runners comparing long fixed-distance ultras that still unfold over multiple days. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.

Planning Notes

  • Prepare for sleep decisions, weather swings, and aid-station discipline. The distance is only one part of a multi-day fixed-distance race.
  • Treat intermediate cutoff gates as part of the course. Build enough margin for aid stops and late-race slowdown, and verify every current gate in the official rules.
  • Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
  • The directory marks this as having comparatively simpler logistics. That editorial label is not a safety rating; verify cutoffs, terrain, support, crew access, and withdrawal procedures.

Verification & Sources

Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated August 18, 2026. Organizers can revise details after review.

  1. Official Tunnel Hill 100 site — https://www.tunnelhill100.com/
  2. Official rules and race details — https://ultrasignup.com/register.aspx?did=133326
  3. Multiday Running event directory review scope: August 18, 2026.