2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226147We consider transient one-dimensional random walks in random environment with zero asymptotic speed. An aging phenomenon involving the generalized Arcsine law is proved using the localization of the walk at the foot of "valleys" of height $\log t$. In the quenched setting, we also sharply estimate the distribution of the walk at time $t$.24 pages, accepted for publication in "Bulletin de la SMF"ProbabilityMathematical Physics60K37 (Primary) 60G50, 60J45, 82D30 (Secondary)text