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What is a Backyard Ultra?

Backyard Ultra is a very popular ultra running mode around the world. Not the fastest runners win, but those who can enjoy the event the longest. Last (Wo)man Standing.

Only the last one on the track wins. Everyone else gets a DNF!

The original Big Dog's Backyard Ultra takes place every 2 years in October in Tennessee, USA and is very popular in the ultra running scene. Founder Gary "Lazarus" Cantrell is also known for the infamous Barkley Marathons.

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Backyard Ultra

ABU Merchandising

ABU Events 2026

ABU Series 2026

ABU Hall of Fame

Photo/video archive

Backyard Ultra Rules

A lap of 6.706 kilometers (= 4.167 miles) is run. 24 laps equal 100 miles.

Every hour all runners start a new lap. If you don't finish the round in time and are back at the start, you're out! No late start! Very easy!

rules in detail

Running Backyard Ultra

Anker 1

Unser Backyard Ultra Nationalteam für die WM

Big Backyard Ultra World Team Championship 2026

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www.bigsbackyardultra.com

Austria Backyard Ultra Events

Austria Backyard Ultra Kirchschlag 2024(c)Steve-Auch-IMG_6936.jpg

Austria Backyard Ultra -

Kirchschlag bei Linz

(waiting list sold out)

08/29/2026

Summertime Backyard Ultra

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Austria Backyard Ultra -

Kirchdorf in Tirol

(waiting list open)

Austria Backyard 7+1

(open)

09/19/2026

The flattest Austria Backyard Ultra in Austria!

register directly

Austria Backyard Ultra -

Seekirchen am Wallersee

+ BYU TEAM-WM Austria

(waiting list sold out)

10/17/2026

Backyard Ultra on the World Championship course of Team Austria.

Austria Backyard Ultra Kirchschlag 2024(c)Steve-Auch-1MG_2687.jpg

Austria Backyard Ultra - Thüringen/Vorarlberg

(waiting list open)

10/24/2026

The first Backyard Ultra in Vorarlberg

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Austria Backyard Ultra - One More Hour

(open)

11/07/2026

The first Backyard Ultra in Carinthia

register directly

Austria Backyard Ultra -

Amstetten - Forstheide

(sold out)

+Austria Backyard 7+1

(open)

04/24/2027

Spring edition - run into the season!

register directly

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Austria Backyard Ultra -

Ternberg TRAIL

05/14/2026

the first Trail Backyard Ultra in Austria

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Austria Backyard Ultra -

Loosdorf TRAIL

05/30/2026

Trail. Loop. Repeat.

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Austria Backyard Ultra -

Frankenmarkt

06/20/2026

New location - New route!

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Austria Backyard Ultra -

Wagendorf/Oststeiermark

07/10/2026

Austria Backyard Ultra festival in the green heart of Austria!

TABU 2026 - Trans Austrian Backyard Ultra Charityrun

05/02/2026 - 05/10/2026

Austria's longest team ultra run as a charity run for children's cancer support

register directly

ABYU Loosdorf Trail 2025(c)Steve-Auch-1MG_3073_edited.jpg

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