10/05/2026
OFFICIAL ANNOUNCEMENT
To our dear runners, partners, volunteers, and the entire ultrarunning community,
For the past 10 years, this race has become more than just an ultramarathon. It became a journey of passion, perseverance, friendship, and unforgettable memories carved across the mountains of the Cordilleras.
From humble beginnings to becoming one of the country’s most recognized mountain ultramarathons, every story shared through the years has helped shape this event into what it is today.
As we celebrate a decade of mountain terraces running history, we are proud to officially announce the rebranding of our iconic race:
A1 Philippines: Cordillera Mountain Terraces 100
Formerly known as Altra 100 Philippines, this new identity marks the beginning of another exciting chapter while honoring the legacy we have built together over the last 10 years.
Though the name changes, the spirit of the race remains untouched:
✔️ the legendary Cordillera trails
✔️ the breathtaking mountain terraces
✔️ the deep connection with local communities
✔️ and the relentless challenge that every ultrarunner seeks
The name A1 Philippines represents excellence, resilience, and our commitment to continue elevating the ultrarunning experience for years to come.
To every runner who runs and climbs these mountains and terraces with us, every volunteer who stood in the cold nights, every partner and local community who opened their homes and hearts — thank you for being part of this incredible decade-long journey.
This is not the end of a legacy.
This is the evolution of it.
10 years strong.
One enduring spirit.
One legendary mountain terraces race.
Welcome to the new era of
A1 Philippines: Cordillera Mountain Terraces 100
See you once again among the terraces and mountains of the Cordilleras.
Our early bird registration starts tomorrow, May 11, 2026.
See you in Banaue.