‘Gravel Birds Ultracycling’ is simultaneously a personal bikepacking challenge and a collective cycling adventure. An opportunity to face your physical and emotional limits while other adventurers are doing the same. It isn't a race or a competition. 'Gravel Birds' follows 'self supported' approach and drafting is not allowed.

Bikepackers can ride one of the two available routes: the Gravel Birds 750 or the L'Abetarda 270. Both routes start and end in Castro Verde. 'Gravel Birds 750' has approximately 8,000 meters of elevation gain and it is 75% off-road. L’Abetarda 270 has 3,000 meters of climbing and it is 65% off road. Riders - in both routes - have six days to complete their journey.

The closest airport are located in Faro and Lisbon. Funcheira is the closest train station to Castro Verde: 30 km away. From Faro train station takes 1h30m. From 'Lisboa-Oriente' train station takes 2h. Use InterCity trains to transport your bike.

Unsupported ultracycling seeks the essence of cycling through the spirit of adventure, independence and autonomy, as well as equality of circumstances among all participants. It's about your experience and challenging your own limits. So makes no sense to receive help from your family and friends with resupplies, mechanical support and accommodation. You can only use the commercial services available to the public / that are available to all. Participants in the pair category can help each other, as well as all riders of the L'Abetarda route.

Drafting is not allowed: you cannot ride on the wheel of other participants (except your fellow pair), cyclists or vehicles, thus obtaining aerodynamic advantages.

Helmet, reflective vest (during the nights and poor visibility conditions), frontal and rear lights (including a backup kit), emergency blanket. The organization assures personal insurance for accidents (expenses for treatment, repatriation, disability and death). Presence at the briefing session is mandatory.