Granfondo Serra D'Ossa

The Rota Coração da Ria is a mountain bike marathon event taking place on October 4, 2026, in Murtosa, Portugal. The race features a single approximately 50 km route that highlights the unique amphibious landscape along the ria, including forest trails and cultivated fields.

Participation is open to all riders aged 16 and above, including those on mountain bikes, gravel bikes, and e-bikes. The event starts at 09:30 from Parque da Saldida-Murtosa, with a maximum completion time of 4 hours.

The race offers a festive atmosphere with well-marked trails, three aid stations, and prizes awarded to the top finishers by gender and age categories, including a separate classification for e-bike riders.

The Taça Oeste XCM BTT 2026 is an amateur mountain bike marathon series organized by MR3eventus, taking place in Vimeiro-Lourinhã, Lisboa, with the first stage on October 4, 2026, starting at 09:00. The event features two distances: a Marathon of approximately 60 km and a Half Marathon of approximately 40 km, both on rural roads and trails.

Open to all participants aged 18 and over, with special provisions for under-18s with parental authorization. E-Bikes are allowed but only classified in the Marathon category. The competition includes multiple age categories for men and women, with a points system across four stages for overall classification.

The routes are marked with lime and red arrows, and participants must comply with traffic rules as the courses are open to other vehicles. The event emphasizes safety, mandatory helmet use, and adherence to regulations, creating a competitive yet amateur-friendly atmosphere.

The II Troféu de Resistência BTT de Alenquer – Inter Freguesias is a mountain bike endurance race series organized by the Municipality of Alenquer, taking place across multiple dates and locations in 2026. The event includes nine independent races held in various parishes within Alenquer, with the final race scheduled for October 4, 2026, in Cabanas do Chão.

The races feature 2-hour endurance formats on courses ranging from 4 to 7 km, primarily on dirt roads and single-tracks. The competition is open to all athletes aged 16 and above, both federated and non-federated, with categories for men, women, and e-bikes across different age groups.

This series promotes mountain biking in the region, offering a competitive yet inclusive atmosphere with individual race trophies and an overall trophy for the best cumulative performance across the series.

The Ultra Maratona Templários BTT (UMT) is a mountain bike adventure race with GPS navigation, taking place on October 3, 2026, in Tomar, Portugal. It features a challenging circular course of approximately 145 km with 3500 meters of elevation gain.

Participants can choose from several solo race options including the UMT BTT (145 km), Maratona BTT dos Templários (85 km), UMT Gravel (125 km), Maratona Gravel dos Templários (85 km), and Maratona E-bikes dos Templários (85 km). The event is open to all riders aged 18 and over, with special provisions for 15-17 year olds with parental consent.

The race is known for its high difficulty level, with mostly unpaved forest trails and paths, requiring strong endurance and navigation skills. The event offers a competitive atmosphere with official timing, classifications by age categories, and podium ceremonies.