Over a period of nearly two months, John and Tyler skied more than 500 miles, hauling sleds that contained everything they needed to survive. 

They maneuvered their 300-pound loads through punishing rubble fields and swam across stretches of open water. To fuel their bodies and fight back the cold, each consumed more than 7,000 calories per day, downing deep-fried bacon, chunks of butter, and fat-laden pemmican stew.