Watch Online Free HD Solarmovies. The Montane Spine Race has grown from a small grass roots event with barely a dozen runners into an infamous and world renowned race with 500 plus competitors. Covering the entire length of the 268-mile Pennine Way from south to north in the depths of winter, it offers participants an experience like nothing else and has built a reputation for being Britain's most brutal race. This film tells the story of the race from its inception to the present day, through interviews with its founders, long-standing crew members and through the experiences of athletes who have braved the challenge.