The best treks in Nepal

Nepal has more than a dozen world-class trekking routes. Most first-time visitors book the same one, and not all of them should. The runway at Lukla is 527 meters long about 1,729 feet and tilts uphill at nearly 12 percent. It sits at 2,845 meters (9,334 feet) on a shelf above the Dudh Koshi river. On clear October mornings, small…