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Distance

Unlimited

Elevation

unspecified

Start Date

Sat, 3rd Oct 2026

Location

Redbridge Cycling Centre, London

Cut-off Time

35 Hours

Mackyard Ultra London - 24 Hour Looped Endurance Event

While not technically a backyard ultra in the true sense, The Mackyard Ultra London is a lapped 24 hour endurance event held within striking distance of the capital. It is a mental and physical test where speed is irrelevant, and stubbornness is king.

Hosted by Mackyard Events, this isn't about running fast; it's about not stopping. You will run the same 4.2 mile "yard" on the hour, every hour, for 24 hours or until you literally cannot take another step.

Mackyard Ultra Rules

For the uninitiated, the format is brutally simple:

The Yard: You must complete a 4.2 mile (6.7km) loop within 60 minutes.

The Bell: A new loop starts exactly on the hour. You must be in the starting corral when the bell rings. If you are not there, you are out.

The Rest: If you finish the loop in 45 minutes, you get 15 minutes of rest. If you finish in 58 minutes, you get 2 minutes. Which strategy will you choose?

The End: This is a 24-hour capped event, however this event is very much focused on you achieving your personal goals - there is no commitment from you to make it to the end.

Course

This London backyard ultra takes place at the Redbridge Cycling Centre in Romford which is tarmac so road shoes are recommended. The 4.2 mile yard is made up of multiple loops of the 2km cycling track. You will get to know every corner, every dip, and every blade of grass intimately.

You are encouraged to bring a small support crew (entry for them is included). They can feed you, massage your legs, and lie to you about how fresh you look. Unlike many rugged trail backyards, this venue has hot showers, changing rooms, and proper toilets. You can set up your own "pit area" at the HQ. Bring your camping chair, cooler, and sleeping bag (for the brief naps).

This is a self-sufficient event. Water (hot and cold) is provided, but you must bring all your own fuel.

If you're ready to sign up to the Mackyard London Backyard Ultra and go one more lap, head over the the official race website for full details, including registration.

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