Challenge yourself in Portugal’s most demanding long-distance triathlon set in the heart of the Serra da Estrela Natural Park. The Estrela Xtreme Triathlon® takes place from September 12–14, 2025, and offers two epic formats:

🏁 FULL Distance: 4km swim, 190km bike, 41km run

🏁 HALF Distance: 2km swim, 105km bike, 21km run

🏁 HALF RELAY: Same distances as HALF, split between 2 or 3 athletes

From icy alpine lakes to steep mountain climbs and forest trails, this race pushes every limit across Portugal’s highest terrain. Open to licensed and non-licensed triathletes, the EXT® welcomes extreme endurance lovers and team challengers alike.

With limited slots (40 FULL / 70 HALF), personal support crews, GPS tracking, and strict self-sufficiency rules, Estrela Xtreme isn't just a race — it's an expedition.

🗺️ Unique alpine scenery at Lagoa do Vale do Rossim and Parque da Várzea

🏞️ Intense elevation gain: 4700m+ on FULL bike, 1600m+ on FULL run

🎽 Relay option makes HALF accessible for more teams

🔥 A true test for ultra-experienced athletes, but the HALF offers a gateway for strong newcomers ready for a challenge