The duathlon events in Portugal for 2026 are organized by the Portuguese Triathlon Federation, offering a comprehensive national calendar of competitions across various regions. These races feature a variety of distances and formats, including individual and team competitions, accessible to athletes of all levels, from beginners to elite.

The competitions are part of national championships and club series, fostering a competitive yet inclusive environment. The events are often held in locations of great natural beauty across Portugal, offering athletes unique scenery and varied challenges. The atmosphere is vibrant and community-oriented, with some races featuring relay formats and age-group categories.