The IV Gião Bike Challenge by AJ Carvalho 2026 is a mountain bike race taking place on April 4, 2026, in Gião, Vila do Conde, Portugal. It offers two challenging distances: the Gião Extreme Challenge of approximately 140 km with around 3500 meters of elevation gain and a time limit of 13 hours, and the Gião Race Challenge of approximately 70 km with about 1800 meters of elevation gain and an 8-hour time limit. Both routes are navigated exclusively by GPS, making the race a true test of navigation skills and endurance.

This event is open to individuals and pairs aged 18 and above, emphasizing personal autonomy and preparedness. The race features a rugged terrain mainly consisting of trails, paths, and unpaved roads, crossing public roads and rural properties, which requires attention and respect for safety rules. The race has a competitive spirit with various categories including elite, age groups, e-bikes, and teams, with awards for top finishers in each category. The atmosphere combines extreme endurance sport with a convivial final gathering, embracing technology and adventure.

In parallel, there is a solidarity walk of about 8 km and a bike gincana for children, making the event inclusive for families and different participant profiles. The race’s use of GPS tracking instead of physical markings enhances safety and the challenge, distinguishing it as an innovative endurance mountain bike event.