Here are the people who were on for the first half of the trip, AKA "The Caribou Crawler"
Alvin, son of Rosa, from Oakland.
Anastasia and Tatyana from Germany, but originally from Russia.
Justin from Oakland
Lauren from Australia
Marilyn from ... Colorado?
Mark, of Mark and Nina, from Northern California.
Mick of Sandy and Mick from Australia
Rosa from Oakland
Sabrina from the Bay Area
Sandy from Australia.