A 10-year-old child prodigy cartographer secretly leaves his family's ranch in Montana where he lives with his cowboy father and scientist mother and travels across the country on board a freight train to receive an award at the Smithsonian Institute.
Kyle Catlett
T.S. Spivet
Helena Bonham Carter
Dr. Clair
Judy Davis
G.H. Jibsen
Callum Keith Rennie
Father
Niamh Wilson
Gracie
Jakob Davies
Layton
Rick Mercer
Roy
Robert Maillet
Giant Hobo
