Traprock 50

APR
17
2027
Trail ultramarathon in Bloomfield CT with 50K and 17K loop options on technical single track and rocky forest roads; cupless event with a nine hour cutoff for the 50K.
Sat 17 Apr 2027
50 kilometers 17 kilometers

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Traprock 50

Traprock 50 is a trail running event in Bloomfield, CT, organized by the CT Trailmixers. The event offers two distances and uses a loop course that is approximately 10.5 to 11 miles per loop. The 17K uses one loop and the 50K uses three loops.

  • 50K
  • 17K

The course runs largely on the Metacomet Trail and is roughly 50% technical single track, with the remainder on double-track. The route consists entirely of rolling forest roads or single track that can be extremely rocky. The course route will not change and includes a notable power line hill.

The event recommends that entrants have recent marathon or equivalent trail experience. The 50K has a nine hour cutoff. The race is cupless; participants should plan to use their own cup or handheld bottle. Chip timing will be in use.

Administrative details: registration opens on November 26, 2026; race proceeds support local organizations including the Simsbury Land Trust and the Connecticut Forest and Parks Association. The CT Trailmixers run the event as a volunteer non profit club. Shirts are available for separate purchase. If the event reaches capacity, a waitlist will open and selections are made in registration order; selected runners have two days to accept. Refund policy: cancellations before March 1 receive a 50 percent refund; no refunds, bib transfers, or deferrals after that date. Visit the organization's website for the most recent information.

50 km
50k
17 km
17k

Events nearby

Experience a community trail run through Elm Ridge Park benefiting the Rocky Hill Fire Department and Library. This event features a two loop trail course for adults and a fun medal race for kids.
A noncompetitive fundraising group run along the Farmington Canal Heritage Trail covering about 56 miles from West Suffield to New Haven with a 14-hour cut-off.
A 5K trail run at Winding Trails in Farmington on the designated course around Walton Pond, with registration from February 20 to September 20 and a $35 fee; overall and age-group awards plus a prize for the first local finishers.
Trail races in Burlington CT offering 8K and 5K on mixed technical trails with notable local landmarks and a Burlington Land Trust fundraiser.
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