In 2000 Otxoa won a mountain stage in the Tour de France on top of the Hautacam on a cold and rainy day.

[1] He broke away with Nico Mattan with 155 km (96 mi) to race and dropped him on the col de Marie Blanque.

He paid for his earlier efforts on the hors categorie but held on to finish with 42 seconds advantage Lance Armstrong.

In the 2004 Summer Paralympics he won a gold in the road race/time trial event and a silver in the individual pursuit.

Otxoa was disqualified during the preliminary round of the individual pursuit (CP 3) at the 2008 Summer Paralympics, for riding too close behind his opponent, Darren Kenny, who had overtaken him.