The Estrela Xtreme Triathlon is a triathlon event held in the Serra da Estrela Natural Park, Portugal, on September 12-13, 2026. It offers multiple distance challenges: Full Distance, Half Distance (with an option for relay teams), and Starter Distance. The Full Distance includes a 4 km swim, 190 km cycling with 4700 m elevation, and a 41 km run with 1600 m elevation, while the Half Distance features 2 km swim, 105 km cycling with 2600 m elevation, and a 21 km run with 900 m elevation. The Starter Distance offers a 1 km swim, 53 km cycling, and a 15 km run with moderate technical difficulty.

This event is open to all athletes, requiring mandatory insurance and adherence to strict rules, including the necessity of an athlete support team for the Full Distance. The triathlon is integrated with official classifications by age and gender and offers team relay options for the Half Distance. It stands out for its challenging mountainous terrain in Portugal’s highest natural park, with mixed road, forest trails, and significant elevation gains, providing an inspiring and technical race environment.

The race atmosphere is competitive and supportive, with organized logistics such as athlete transport, technical checks, and safety measures. The event includes podium awards and finisher medals, making it appealing for both elite and amateur triathletes seeking a demanding and scenic triathlon experience.