As the disembodied commentary of Bear Grylls emphasises in Arthur the King, adventure racing is an exercise in improvisation.
A ragtag group of athletes kayak, climb, cycle and sprint through the wilderness from checkpoint to checkpoint in this fact-based film, but how they and their newfound canine companion navigate the course is all about their intuition and capacity for taking risks.
Regrettably, there are no gambles in this cross-breed of sports