ultramarathon

Even socks would be too heavy to wear in an ultramarathon.

It was the first time an amputee had won an ultramarathon.

She also takes part in mountain bike and ultramarathon competitions.

This race was the first official 100 mile distance ultramarathon ever held in Canada.

An ultramarathon is held on the route each July.

New Zealand's first ultramarathon was held on a 100 km track.

Their potential ability came into light after only one year, when they took part in the 1999 Dead Sea ultramarathon.

It is the world's largest and oldest ultramarathon race.

He knew of no ultramarathon training manuals, so he looked to nature.

The ultramarathon turns the mirror inside out and backward.

Having to ride continuously for days with little to no sleep puts this event in the ultramarathon category.

As with every ultramarathon, there are potentially lethal health risks involved in extreme physical events.

Usually it involved feats of endurance which would now be classified as ultramarathon.

There's an eligibility criteria for the participation in this extreme ultramarathon.

His goals are to win the national ultramarathon 100K championship; his best finish was third.

He has completed over 200 marathon and ultramarathon races.

Karnazes has been described as "the world's most famous ultramarathon runner".

Many high profile trail races are of ultramarathon distance.

There is also an ultramarathon of 250 km across the Namib desert.

Beyond the ultramarathon lie the multiday and stage races.

Opsahl, an ultramarathon veteran, is no stranger to unusual competitive circumstances.

The Mountainman is a single stage mountain ultramarathon in Switzerland.

Mittleman is one of the world's premier ultramarathon runners.

What better training for a 150-mile ultramarathon than a circus-themed fun run through the vineyards of Bordeaux?

One compared 45 athletes who collapsed after an ultramarathon to 65 who completed the race and did not collapse.