Bidasoa Half Marathon + 10K

The Bidassoa Half Marathon in Irún is a fast, certified 21K designed for runners chasing personal bests. Taking place in February, the course is completely flat and built for speed, making it one of the best early-season races in Europe.

The route follows the Bidassoa River along the French-Spanish border, connecting Irún with Hondarribia and offering views toward Jaizkibel Mountain. With zero elevation gain, it is a pure performance course ideal for tempo running and PB attempts.

A 10K option is also available for those looking for a shorter but intense race experience. Well-organized checkpoints and a strict time limit ensure a competitive but accessible event for motivated runners.

More than just a race, the Bidassoa Half Marathon combines speed, atmosphere, and a unique cross-border setting in the heart of the Basque Country.