Across the world seemingly ordinary people are undertaking extraordinary challenges that will push their limits to achieve the improbable - by sea, bike, foot o

Some competitors are able to crawl under barbed wire for miles. Others stay awake for days at a time. Readers will learn about some of the world's most extreme

What do fierljeppen, running 156 miles in the Sahara desert and coal-carrying all have in common? They're just some of the wackiest, toughest and most extreme m

Each year, thousands of competitors pit themselves against the elements, extremes of geography and their own psyches to take part in the world's hardest physica

Each year, thousands of competitors pit themselves against the elements, extremes of geography and their own psyches to take part in the world’s hardest physi