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SANTAKBO RACE DETAILS

Irosin Caldera Backyard Ultra

Saturday, September 19, 2026

Irosin, Sorsogon, Irosin, Sorsogon, Luzon

Race categories

Not announced

Not announced

Registration fees

Not announced

Not announced

Registration

Not announced

Registration ↗

Organizer

Irosin Road and Trail Runners

Announced

Source and verification

These details retain their collection status so unknown, conflicting, or unverified information is never presented as confirmed.

Last checked: 8/20/2026, 12:56:08 AM