Kiprun Singapore Half-Marathon Cut to 10km Due to Haze

The inaugural Kiprun Singapore half-marathon was shortened to 10km on September 27, 2026, after worsening haze pushed air quality into the unhealthy range across parts of Singapore. Organisers Decathlon and MetaSport announced the sudden adjustment on Instagram in the early hours of race day following an air-quality review at 2am.

The headline 21.1km event was halved in distance, while the 10km, 5km, and 670m Kids Dash formats kept their original distances and start times. The shortened half-marathon flagged off at approximately 5am, starting along Nicoll Highway and finishing at the Decathlon Singapore Lab in Kallang.

Why is the kiprun event trending?

People across Singapore searched for updates after learning that the major running event had been altered mid-race morning. Runners who trained for the full 21.1km distance instead completed a 10km route after organisers applied predetermined air-quality thresholds as conditions deteriorated.

What changes were made to the race?

Organisers removed several major landmarks from the original half-marathon route, including the Marina Barrage, Flower Dome, Gardens by the Bay, Marina Bay Sands, ArtScience Museum, and the Singapore Flyer. In addition to shortening the main race, all categories were transitioned to non-competitive events with no official rankings or results, and the planned awards ceremony was cancelled.

What happens next for participants?

Details regarding refunds, rescheduled events, or participant communications were not available at the time of writing. Start times for the remaining events proceeded as scheduled, with the 10km starting at 6am, the 5km at 7am, and the Kids Dash at 9am.