The challenge: could someone on a mountain bike complete the 171km (106m) Ultra-Trail du Mont Blanc (UTMB) faster than the record time set by the current course record holder, trail runner Kilian Jornet?
Pro New Zealand mountain biker Matthew Fairbrother was the rider prepared to ride all day and through the night to find out. We won’t spoil the outcome for you – it’s more fun watching the nail-biting, 11-minute video yourself. But let’s just say, Fairbrother has more to contend with than arduous climbs and descents – his bowels need to hold out as well.
