The fourth edition of the Trail por Terras do Adufe is a trail running event scheduled for October 17, 2026, in Penha Garcia, Idanha-a-Nova, Portugal. The event features three races and one walk. The race distances are 33 km with 1400 meters of elevation gain, 21 km with 750 meters of elevation gain, and 14 km with 400 meters of elevation gain. The non-competitive walk is 9 km with 300 meters of elevation gain. All routes are circular, beginning and ending at the Parish Council. The event is part of the Beira Baixa Trail Running Circuit (CTRBB) and includes age categories with minimum age requirements for each event. The courses traverse natural and historical landscapes. The event aims to foster social interaction, health, and well-being, with an emphasis on local culture, food, and natural scenery. Prizes will be awarded by category and by team.