Sib is running a supercross series under his "mxs championship" title...Wednesdays at 9 CET with all the tracks from this series, next week is phoenix. I'd say that is pretty much a Euro series.
I've ran into that problem a ton too in hosting races and I have came to the conclusion...
America, **** yea! Gonna host races when we ****ing want to, America, **** yea! So you can go and host your own race! (Sang to the "Team America" tune)
All joking aside though, I agree with phathry, it's when it works for the host, without the host the race won't happen. Sib runs a good series too, so all you Euros go check it out!
As for Australia...kinda screwed I suppose...
Who invented time zones anyway? hahaha