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Jesse Davis (USA) and Caroline Boller (USA) are 1st IAU America´s 100K Champions.

The inaugural IAU 100K Americas Championships are won by Jesse Davis (USA) and Caroline Boller (USA).

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1st IAU 100K Americas Championships (Pre race Press Release)

Timo Yanacheck, race director for the past 11 years says, “"Madison, Wisconsin, has the perfect setting for a championship 100-kilometer road race. 10 circuits of a 10K course.  It can be a fast course. 

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Los Alcazarez, Spain Belfast, Ireland

2017 100K Americas Championships
8th April 2017, Madison (Wisconsin), United States

2018 100K World Championships
8th September 2017 (proposed date), Sveti Martin na Muri, Croatia

2017 24H World Championships
1st/2nd July 2017, Victoria Park, Belfast, Ireland

2019 24H World Championships
proposed: July 2019, Irdning, Austria
Doha, Qatar Badia Prataglia, Italy

2017 50K World Championships
date not available yet, Doha, Qatar

2017 TRAIL World Championships
10th June 2017, Badia Prataglia, Italy

2018 TRAIL World Championships
proposed: second weekend in May, Penyagolosa, Spain

Trailer 2017 Trail World Championships, Badia Prataglia, Italy,

  Trailer 2017 24H World Championships Belfast, Ireland


4/1/2017 6/12/24 hours United Kingdom Track
Freedom Leisure British Ultrafest

4/1/2017 6/12/24 hours United Kingdom Track
Freedom Leisure British Ultrafest

4/7/2017 135 miles Australia Trail
Down Under 135

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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

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