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...
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.
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Thread: PBR 500k - registration open