The Intermunicipal Cup 3H Resistance MTB is a mountain bike endurance race series consisting of six events held in various locations including Alenquer, Loures, Mafra, Oeiras, Amadora, and Lisbon. The races take place in 2025 and 2026, with the first event scheduled for May 31, 2026.

Participants can compete in the 3-hour resistance race or in juvenile MTB races held on the same day. The event is open to licensed and non-licensed athletes aged 5 and above, with categories for all ages and genders, including e-Bikes. The race features circuits approximately 4 to 7 km for the 3-hour race and 1 to 3 km for juvenile races, with specific distances for younger categories.

The competition is part of an intermunicipal series with a points system and prizes for top finishers in each category and overall. The event promotes competitive amateur cycling with a structured format including start boxes and timed laps, supported by technical and medical assistance.

The Intermunicipal Cup 3H MTB Endurance is a mountain bike endurance race series held in 2026 across six events in various municipalities including Loures, Alenquer, Mafra, Oeiras, Amadora, and Lisbon. The Loures event is scheduled for July 11, 2026, at 15:00 in Póvoa Santa Iria, Lisbon.

The race features a 3-hour endurance format with circuits approximately 4 to 7 km long for the main event and shorter circuits for juvenile categories, ranging from 500 meters for the youngest to up to 3 km for older youth categories. The competition is open to licensed and non-licensed riders aged 5 and above, with multiple age and gender categories, including e-Bikes.

The event is part of a competitive amateur series with point classifications and prizes for top finishers. Juvenile races occur on the same day as the endurance races, with specific start times and distances. The race atmosphere is competitive and structured, with safety and fair play emphasized.

The Intermunicipal Cup 3H MTB Endurance is a mountain bike endurance race series held across six events in various municipalities including Alenquer, Loures, Mafra, Oeiras, Amadora, and Lisbon. The 2026 edition welcomes participants aged 5 and above, with categories for juniors, adults, masters, and e-bikes.

The races take place on circuits approximately 4 to 7 km long for the 3-hour endurance events and 1 to 3 km for juvenile races, with specific shorter distances for younger categories. The competition is open to both licensed competitive athletes and non-federated riders, fostering an inclusive amateur competitive atmosphere.

Alongside the endurance races, juvenile MTB races are held on the same days, providing a comprehensive event for all ages. The series awards points and prizes across categories, culminating in a final trophy ceremony recognizing top performers.

The Intermunicipal Cup 3H Resistance MTB is a mountain bike endurance race series held in 2026 across six events in various municipalities including Alenquer, Loures, Mafra, Oeiras, Amadora, and Lisbon. The final event takes place in Monsanto, Lisbon on October 25, 2026.

The race features a 3-hour resistance format with courses approximately 4 to 7 km long, alongside juvenile MTB races with shorter circuits from 500 meters to 3 km depending on age categories. The competition is open to licensed and non-licensed amateur athletes aged 5 and above, with multiple age and gender categories, including e-Bikes.

This series offers a competitive amateur atmosphere with point-based classifications and prizes for top finishers, supported by local cycling clubs and municipalities. Juvenile races run concurrently with the main events, providing a family-friendly environment.