Ibarrako Mendi Duatloia is a mountain duathlon held in Ibarra each November, forming part of the Euskal Herria Mendiduatloia series. The event begins at 15:30, following a run-bike-run structure that includes two off-road running segments separated by a mountain bike course. Bidetxur Mendi Kluba is the organizing body.
The initial run covers 5.58 km with 178 m of elevation gain, presenting an uphill challenge from the start. The subsequent 14.10 km mountain bike section features 436 m of climbing, constituting the primary physical demand. The concluding run is brief at 1.81 km but includes an additional 56 m of ascent, requiring participants to transition efficiently and maintain uphill momentum.