Born in Tudela, Navarre, Martón was a Peña Sport FC youth graduate, and made his first team debut on 10 December 2016 by playing the last 18 minutes of a 1–1 Tercera División away draw against CD Valle de Egüés. In the 2017 summer, he moved to Real Sociedad and returned to the youth setup.
Martón returned to Peña Sport for the 2018–19 season, after agreeing to a loan deal. Upon returning to the Txuri-urdin, he played for the C-team before moving to Segunda División B side CD Covadonga on 9 September 2020, also in a temporary deal.[1]