Ultrarunner Karl Meltzer has long dreamed of setting the speed record for crossing America's Appalachian Trail. Now he sets out for his third and final attempt to run the 3,523km (2,188 miles) in less than 46 days, 8 hours, 6 min.

Iconic snowboarder Travis Rice and friends redefine what is possible in the mountains. Experience the highs, as new tricks are landed and new zones opened, alongside the lows, where avalanches, accidents, and wrong-turns strike.