One of the country's toughest walks, the Pennine Way stretches for 270 remote, lonely miles along the backbone of England. It was Britain's first long-distance trail and it's still the best known. It's also the yardstick by which all serious walkers are measured.Pause for a pint at the highest pub in England.Follow in the footsteps of the Roman legions.Pass through the birthplace of the Industrial Revolution.Hike through some of the most beautiful...