If it helps anyone..the race will be one of 4 races free to air this year on the German channel RTL.
Available in the UK if you point your satellite in the right direction.
Races are also being broadcast alternately by the Austrian broadcasters (online) Servus and ORF.
IIRC its ORFs turn this weekend...to watch online your territory must show as Austria
Plus I think also SRF in Switzerland.