Robin Harvie was a fairly ordinary runner. He ran his first marathon after a bet. Then he found that although he couldn't run fast, he could run long distances- very long. A casual hobby turned into a 120-miles-a-week obsession, and a training route along the River Thames morphed into a promise to himself that he would tackle the oldest and toughest footrace on earth: the Spartathlon from Athens to Sparta. This race, a recreation of Pheidippides's legendary journey, is 150 miles long, crosses two mountain ranges, and is the toughest race on the ultradistance runner's calendar. It isn't at all ordinary. p class="MsoNormal"Harvie's experience- from the mundanity of daily training routes to the extreme tests of the desert's scorching heat and the darkest hours of the night- reveals the profoundly intoxicating experience of running, and the ways in which every mile taken is both a step further into the unknown and a pace deeper into the self.

What do you get an atheist for Christmas?

If you're an atheist, you don't believe in the three wise men, so this Christmas, we bring you not three, but forty-two wise men and women, bearing gifts of comedy, science, philosophy, the arts, and knowledge. What does it feel like to be born on Christmas day? How can you most effectively use lights to make your house visible from space? And where can you listen to the echoes of the Big Bang on December 25? The Atheist's Guide to Christmas answers all these questions and more: Richard Dawkins tells an original Christmas story.Phil Plait fact-checks the Star of Bethlehem.Neal Pollack teaches his family a lesson on holiday spirit.Simon Singh offers a very special scientific experiment.Simon le Bon loses his faith (but keeps church music).AC Grayling explains how to have a truly happy Christmas.

Plus thirty-six other brilliant, funny, free-thinking pieces perfect for anyone who doesn't think of holidays as holy days.

All author advances and royalties for The Atheist's Guide to Christmas will go to Terrence Higgins Trust.

Everyone can run. Whether it is a jog around the park on a Sunday morning, or lining up with 40,000 other people at the start of the London Marathon, all it requires is a pair of trainers and the open road. But where does that road lead and why do we run at all? Robin Harvie ran his first marathon after a bet, but it wasn't until he had ventured 6,000 miles into the extreme world of ultra-distance running to the start line of the oldest and toughest footrace on earth, that he found an answer. As a hobby turned into a 120-mile-a-week obsession, so a way out of his daily routine evolved into a journey to discover who he was and what he was really made of. Through the scorching heat of the desert and into the darkest hours of the morning, Why We Run reveals the beating heart of the brutal and profoundly intoxicating experience of running. If you have ever wondered what makes you lace up your trainers, and why you keep coming back for more, this is your story too.