So you can stall a car starting midday into the Colorado Rockies, get caught in an avalanche, yet not only make it through on foot into Idaho freaking Idaho, but make it all the way to flat ground and to a hotel by dark? Then hoof it for a day, from there steal a car, and get to the coast by midday? Like, yeah, it only takes a tank of gas and a day and a half's walk to get from the Colorodo side of the Rockies and to the PNW coast? Gimme a freaking break.
Then, yeah, a pre-teen scrawny boy is going to drag a bunch of dead bodies out of the bowels of a ship, dump them overboard, and have the time that same night to read all their stories and make a story board? Man, he's not getting one body up those stairs, let alone dozens.