Over the course of ten days and 435 miles, an unbreakable bond is forged between pro adventure racer Michael Light and a scrappy street dog companion dubbed Arthur. As the team is pushed to their outer limits of endurance in the race, Arthur redefines what victory, loyalty and friendship truly mean.
Mark Wahlberg
Michael
Simu Liu
Leo
Juliet Rylance
Helen
Nathalie Emmanuel
Olivia
Ali Suliman
Chik
Bear Grylls
Himself
Paul Guilfoyle
Charlie
Rob Collins
Decker
