The Portugal Bike Race is open... 500km, 13,000m of climbing... non-stop.
It's a great event and you can find more at this link...
http://horizontes.com.pt/

If you're interested and want to know more about the toughest mtb endurance race in Europe, shoot me a PM.

I'm happy to help fellow mtbr members with airport pick-up, lodging (extra space at my pad) and other logistics.