How many miles is the running event held every Saturday morning in fifteen countries across five continents?
5K run The 5K run is a long-distance road running competition over a distance of five kilometres (3.1 miles). Also referred to as the 5K road race, 5 km, or simply 5K, it is the shortest of the most common road running distances. It is usually distinguished from the 5000 metres track running event by stating the distance in kilometres, rather than metres.
IAU 100 km European Championships The IAU 100 km European Championships is an annual, ultrarunning competition over 100 kilometres for European athletes. It is organised by the International Association of Ultrarunners (IAU) and was first held in 1992 – five years after the launched of the World Championships for the distance. The competition features both an individual and national team component. The team race is decided by aggregated the three best times set by a nation's athletes.