The 1st Mt. Asog 360 50km Ultramarathon (MATSU) is the very first official ultra marathon to happen in Rinconada, the 5th congressional district of the province of Camarines Sur. It happened on Feb 18, 2018 and it was part of the featured activities of the Tinagba Festival in our hometown of Iriga, the only city in Rinconada. The 1st MATSU was organized by a local running club aptly named RUNconada.
