For more than ten years, TREX (Association for the promotion and management of projects and events in trail running and other mountain sports) has been dedicated to cultivating outdoor sports across North Macedonia, crafting a vibrant annual calendar of mountain running events. From pioneering technical trail races to supporting grassroots endurance initiatives, TREX members are at the very core of the region's running community—contributing as co-organizers, strategic advisors, dedicated volunteers, and above all, passionate runners on the trail.