The Bison Ultra route for all distances categories is measured using standard GPS watches and not accurate distances. Visit the individual run category pages listed below to know more about the accuracy of the route.
NOTE: With these distance inaccuracies in mind, we have carefully chosen the cut-off time to help most runners achieve their finish goals 50k and 25k categories. Runners are requested not to rely on their GPS markers but to follow the kilometre sign boards kept at an interval of 2 kilometres throughout the course
