The Race of the Birkebeiners, by Lise Lunge-Larsen

It is the year 1206, and deep in the snow covered mountains of Norway the fiercest warriors in the land struggle to ski a baby to safty.  They race against time to save a child prince and bring peace to their country.  A mesmerizing true story of both bravery and tenderness.  Ages 6-12 and up.  Paperback