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[uhl-truh-mar-uh-thon, -thuhn]
any footrace of 50 or more miles.
Source: Dictionary.com
ultramarathon | Define ultramarathon at Dictionary.com
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Ultramarathon - Wikipedia


An ultramarathon, also called ultra distance or ultra running, is any footrace longer than the traditional marathon length of 42.195 kilometres (26.219 mi).

Ultramarathons | Runner's World


The North Face 50 Mile adds a team competition to its championship-style race in San Francisco. Camille Herron wins world 100K. Herron, American Women ...

What happens to your body during an ultramarathon - Washington ...


Nov 9, 2015 ... Sometimes a marathon just isn't long enough. See how ultramarathons can affect a runner's body.

The 9 Toughest Ultramarathons | Outside Online


Fortunately for runners with a hankering for the extreme, there's a class of ultramarathon that's a step above the rest. They're extra long, incredibly tough, and ...

How to Train for Your First Ultra Marathon | ACTIVE


People already think you're crazy for running marathons, and now you tell them you want to run an ultra. An ultra marathon is defined as anything longer than a ...

ULTRAmarathonRunning.com: ULTRA Running Races & Resources


Ultramarathon running races, training and information for ultra running enthusiasts. Trail, mountain, desert, 24 hour and other long distance endurance events.

Badwater | The World's Toughest Foot Race – Badwater 135 ...


“The Badwater Ultramarathon, 'the world's toughest footrace,; is a race of near- mythical status in the world of extreme running.” Sydney Morning Herald.

10 things no one tells you before you run an ultra-marathon ...


Jul 10, 2014 ... An ultra-marathon is any race longer than the classic marathon distance of 26.2 miles. Growing ever more popular, you can do an event almost ...