Great Lawn Backyard Ultra

NOV
14
2026
Backyard Ultra at Cranbury Park in Norwalk, CT where runners repeat a precise 4.167 mile loop every hour until only one runner remains.
Sat 14 Nov 2026
Backyard Ultra Loop

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Great Lawn Backyard Ultra

The Great Lawn Backyard Ultra is an inaugural backyard-format ultramarathon held at Cranbury Park in Norwalk, CT on November 14. Runners complete the exact 4.167-mile loop hour after hour until only one runner remains.

The course runs through historic estate grounds, wooded single-track trails, and manicured park paths. Route direction alternates every four hours, switching between clockwise and counter-clockwise to change the trail character. Elevation changes are rolling and described as manageable for repeated laps. The setting offers late-autumn New England scenery and a spectator-friendly start/finish corral.

As a backyard ultra, the central aid station and runner village sit at the start/finish area. Runners may use personal setups and crew access is permitted in the designated basecamp between laps. Race staff and volunteers provide race-provided hydration, electrolyte replacement, warm food, and hot drinks.

Format and basic rules specify that a bell rings on the hour to start each lap. All runners must be in the starting corral when the bell rings. Each lap must be completed within 60 minutes, and any remaining time within the hour is available for rest or preparation. The event continues with successive hourly laps until one runner completes a lap under their own power within the hour and is declared the winner.

Field size is limited for the inaugural year. This event is no-refund; rollovers are permitted upon request and handled by race staff. Visit the organization's website for the most recent information.

4 mi
Backyard Ultra Loop
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