The International Association of Ultrarunners (IAU)
The International Association of Ultrarunners (IAU) is operating under the patronage of World Athletics and is dedicated to develop ultradistance running internationally within the World Athletics Rules & Regulations. As international governing body for ultradistance running, one of our main objectives is to promote and develop long distance running worldwide by encouraging specific activities in each of the World Athletics Continental Areas.
The 100 km is our “flagship” since the World Athletics officially sanctions this distance and also ratifies 100 km world records.
The major IAU competitions are :