Confirmed
Ultra
Irosin, Sorsogon
Organizer: Irosin Road & Trail Runners
A backyard-ultra format race hosted by Irosin Road & Trail Runners in Irosin, Sorsogon, run in repeating timed loops rather than a fixed distance. Registration runs through a Google Form linked from Pinoy Fitness; no standalone organizer poster has been found yet.
No verified official link yet. Flagged for manual review; check the organizer's Facebook page directly before registering.