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Run Across CT

East Thompson, United States • 4 Apr 2026

Overview

Run Across CT 123 is a point-to-point ultramarathon across Connecticut. The route spans 123 miles and runs from East Thompson to the Wakeman Boy's and Girls Club in Southport. The event offers timed solo and relay options and has a 36-hour cutoff. Total ascent is about 3,842 ft and total descent about 4,455 ft.

Course and logistics

The course passes through 25 towns and mixes trail and road surfaces. Nearly half the course - about 57 miles - follows well-maintained trails with forest scenery and occasional stream crossings. The remainder follows backroads and local highways.

Aid stations are staffed by volunteers and provide drinks, electrolytes, and light snacks. Medical staff are available for common ultramarathon issues. There are no shuttle services this year; participants should arrange their own transport to the start or use parking at nearby park-and-rides. Travel options include lodging near Thompson and Greenwich.

Distances available:

  • 200k solo
  • 200k relay, 3-6 person
  • 100k solo

Registration opens on Wed. Oct 1, 2025 at 12:00 AM ET. Participants are advised to prepare for variable spring weather and to carry appropriate layered and rain gear. Visit the organization's website for the most recent information.

United States Connecticut East Thompson

Race information

Website Registration
200 km
Relay 200k (3-6 Person)
200 km
Solo 200k
100 km
Solo 100k
Visit the organization's website for the most recent information.
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