Run Across CT

APR
10
2027
Point to point 123 mile ultramarathon across Connecticut from East Thompson to Southport with solo and relay options, 36 hour cutoff and mixed trail and road course.
Sat 10 Apr 2027
200 kilometers 100 kilometers

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Run Across CT 123

Run Across CT 123 is a point to point ultramarathon held April 10, 2027, across Connecticut. The route covers 123 miles from East Thompson to the Wakeman Boys and Girls Club in Southport and passes through 25 towns. This is the second running of the event.

Distances offered include:

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

Course details note that about 57 miles are on well-maintained trails, with the remainder on backroads, bike paths, and local highways. Total elevation change is modest for a race of this length, with roughly 4,000 ft ascent and 4,500 ft descent. The mix of shaded forest corridors and open roads provides varied terrain and scenery.

The event uses a 36 hour overall cutoff and includes five intermediate cutoffs plus a finish cutoff. Runners must average about 17.5 minutes per mile (3.5 mph) to remain ahead of cutoffs. Aid stations are staffed by volunteers and supply hydrating drinks, electrolytes, and light snacks; staff can assist with common ultramarathon issues such as blisters and fatigue. Crew access is permitted at aid stations only, except in medical emergencies.

Finishers of the 200K receive a belt buckle; 100K and relay finishers receive a medal. All finishers receive a 2025 CT123 t-shirt and other event swag. Field size is limited; nearby lodging is available in Putnam, CT, and shuttle plans are listed as TBD. Participants should plan for variable spring weather and carry appropriate layers and rain protection. Visit the organization's website for the most recent information.

200 km
Solo 200k
200 km
3-Per. 200k Relay
200 km
6-Per. 200k Relay
100 km
Solo 100k
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