Following a win at the Venta de Baños Cross, Aguilar competed for Spain at the 2010 European Athletics Championships, which was held in Barcelona, and managed seventh in the marathon – the best Spanish finisher in the race. She set her sights on competing at the 2010 European Cross Country Championships in December and established herself as one of Spain's top contenders for the competition with a top five run at the Cross de Atapuerca and a win at the Cross Internacional Valle de Llodio. Her eighth-place finish at the European Championships was the best of the Spanish women and she led the national team to the bronze medals.