Steppenhahn’s vivid website http://www.steppenhahn.de/ultramarathon/ made us aware of an overview of the Austrian ultra calendar (‘Termine in Österreich’): http://ultramarathon.at/11.html
We adapted that overview somewhat by adding the distances, and present the result below. Note that two cross border stageruns are included: the Isarlauf (Austria-Germany) during the third week of May 2004, and Wien-Budapest (Austria-Hungary) during the third week of October 2004.
May 8, Klopeiner See 24 Hour & 6 Hour, St. Kanzian,
http://www.24h-lauf.com/
May 17-21, Isarlauf 328 km, 5 days, Scharnitz (Austria) – Plattling (Germany)
info@isarlauf.de, http://www.isarlauf.de/
June 5, 12-Hour-Run, Vogau/Strass
(no email address or website listed)
June 12, 6-Hour-Run, Leoben
info@grenzgang.com, http://www.grenzgang.com/
June 13, 100 km, Vienna (Wien) Self-Transcendence 100 km Race
http://austria.srichinmoyraces.org/
June 26, Veitsch Alpinmarathon 57 km
grenzstaffellauf@veitsch.at, http://www.grenzstaffellauf.at/
July 3, Gmunden Bergmarathon “Rund um den Traunsee” 70 km
spitzbart@bergmarathon.at, http://www.bergmarathon.at/
July 16, Wörschach 24 Hour
http://www.24stundenlauf.at/
Sept 2-5, Tannheim, Adventurerun Achensee, distance?, 4 days
Sept 4, Rechnitz 10-Hour-Run
http://www.10stundenlauf.at/
Sept 11, Orth a. d. Donau 6-Hour, ASV Andlersdorf
October 9, Schwechat 6-Hour
s.dolezal@schwechat.gv.at, http://www.svschwechat.at/
October 19-23, Wien-Budapest 352 km, 5 days
info@szupermarathon.hu, http://www.szupermarathon.hu