Coz's Backyard Ultra

Holland Patent, United States • 30 May 2026

Coz's Backyard Ultra

Coz's Backyard Ultra is a loop based ultramarathon held at Trenton Fish and Game Club in Holland Patent, New York. The event follows the Backyard Ultra format: runners complete a 3 1/3 mile trail loop every hour and must begin each new loop on time. The scheduled limit for the event is 30 hours and the competition continues until one runner remains. If multiple runners complete the 30 hour period, the runner who crosses the line first on the final lap is the winner. Organizers may allow the final runner to continue toward 100 miles.

The course uses non technical hiking and ski trails through pines and open hardwoods. It is primarily rolling double track with an out and back dirt road section. Each lap includes about 200 feet of total ascent.

Each participant is allocated a personal 12 foot by 12 foot area near the starting line. A runner only aid station table will offer simple items such as water, electrolyte drink, fruit, candy, chips, pickles, and coffee. A communal aid table is encouraged and pizza will be provided in the evening for participants still on the course. Some cups will be provided; bringing a personal cup is suggested to reduce waste.

Entry fee is $120. Milestone awards will recognize participants who reach common ultradistance marks with a patch. Visit the organization's website for the most recent information.

  • Half Marathon
  • Marathon
  • 50k
  • 50 mile
  • 100k
  • 100 mile

Race information

3 mi
Backyard Ultra Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

An annual community 5k and kids run that raises suicide awareness and supports families; offers in-person and virtual 3.1 mile options and a 1 mile kids run.

A charity trail event at Trenton Fish and Game Club supporting autism awareness, featuring a 5 Miles trail run, a 5 Miles walk and a supervised 1K kids fun run. Proceeds benefit local organizations including Kelberman.

A day of timed endurance challenges on a wooded 2.62 mile loop at Tilden Hill Farm in Verona NY. Events finish with an optional pond plunge and a post event celebration with medals and awards.

A scenic five mile memorial run and virtual five mile option in Hinckley, NY, with a kids fun run included; proceeds fund a memorial scholarship for students pursuing medical studies.

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