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also you can find more information about us!

 Belfast 24 Hour International Road Race - cancelled
The Belfast 24 Hour International Road Race due to be held on Saturday/Sunday 20th & 21st June 2020 has been cancelled. This decision is due to the escalation of the Corona Virus (COVID-19) and the need to ensure the health and safety of the runners, their family members, spectators, staff, officials and all the volunteers and our contractors.

> more
April 1st, 2020

Coronavirus (COVID-19) update

> more
>> News page

RUN Winschoten Albi, France

2020 100K World Championships
12th September 2020, Winschoten, The Netherlands

2019 24H World Championships
26th 27th October 2019, Albi, France (some nice pictures of Albi)
IAU Mirandha do Corvo, Portugal

2019 50K World Championships
1th September 2019, Brasov, Romania

2019 TRAIL World Championships
June 8th 2019, Mirandha do Corvo, Portugal

Trailer 2019 WC Trail Portugal  


4/4/2020 55 km Italy Trail
Flaminia Militare Trail

4/4/2020 125 km Italy Trail
Ultra-Trail® Via degli Dei

4/4/2020 50K, 50M, 100K United States Trail
Brazos Bend 50

>> Go to the calendar

The International Association of Ultrarunners (IAU) is operating under the patronage of the IAAF and is dedicated to develop ultradistance running internationally within the IAAF 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 IAAF Continental Areas.

The 100 km is our “flagship” since the IAAF officially sanctions this distance and also ratifies 100 km world records.

The major IAU competitions are :
100 km World Championships under the patronage of the IAAF
100 km Area Championships
24H World Championships
24H Area Championships
Trail World Championship
50 km World Championship

>> Go to about us

On our website:

About us
IAU Championships
Races, Results & Rankings
Pictures & Video

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European Athletics