Competing in the World Surf League's Challenger Series, Erostarbe demonstrated her growing prowess by advancing to the semifinals, where she faced tough competition. Her journey to this stage included a victory over Brazil’s Luana Silva in the quarterfinals. Although she narrowly missed out on a spot in the final after being defeated by Australia’s Sally Fitzgibbons, Erostarbe's performance was strong enough to secure her a spot in the top three.
This result not only elevated her ranking within the Challenger Series but also placed her back in contention for a spot on the Championship Tour (CT), reaffirming her status as one of Spain's top surfers and a serious competitor on the global stage.
