A Second Race on the Same Small Island
The Siquijor Island Marathon offers 5K, 10K, 21.1K and the full 42.195K marathon. [1] This is a distinct event from the Isla del Fuego Marathon (also covered in this research, held 6 September 2026) -- both take place on Siquijor Island roughly three weeks apart, so runners planning a trip should be careful not to conflate the two when checking dates and registration.
The Island of Fires
Siquijor is a small island province in the central Visayas, in the Bohol Sea roughly 30km southeast of Negros. Early Spanish explorers called it Isla de Fuegos -- 'Island of Fires' -- for its swarms of fireflies; it became an independent province in 1971. [2] Beyond that colonial-era nickname, the island carries a distinct cultural identity in Philippine popular culture, often associated with folk healers and traditional mysticism -- a genuinely different destination character from most races in this research batch.
A Fuller Distance Spread
Unlike Isla del Fuego's four-category spread (5K/10K/21K/42K, matching this race's own distances), this marathon offers the same four categories -- meaning both Siquijor races give runners a full-marathon option, unusual for an island this size to support two separate marathon-distance events within a single month.
Thin Organiser Detail
[1] That's less detail than is available for the island's other September race, Isla del Fuego, which at least has a confirmed NGO-linked organiser and some participant feedback.
Should You Run It?
If you're drawn to Siquijor's distinctive island identity and want a full-marathon option specifically, this race on 26 September 2026 is worth watching -- but confirm you're looking at the right event, since Isla del Fuego runs on the same island just weeks earlier. Wait for registration and organiser details to firm up before booking travel.