Races cancelled or postponed in Southeast Asia, 2026
Every half and full marathon on our calendar that was called off this year, with the organiser's reason and a source for each. Haze from regional fires caused most of them. The list updates whenever we learn a race won't run.
Last updated October 20, 2026
- Races called off
- 11
- Haze or air quality
- 7
- Became virtual runs
- 3
- Postponed
- 1
By country: Malaysia 7 · Singapore 2 · Thailand 1 · Philippines 1
November 2026
-
Great Eastern Women's Run 2026
1 November 2026Singapore, Singapore
Cancelled Haze or poor air qualityThe organiser announced that the race on 1 November will not proceed because of worsening air quality.
October 2026
-
Puchong Half Marathon Powered by JomRun®
25 October 2026Puchong, Selangor, Malaysia
Cancelled Other or not statedThe organiser, JomRun, lists the race on 25 October as cancelled on its event page.
-
Mersing Half Marathon Powered by JomRun®
18 October 2026Mersing, Johor, Malaysia
Cancelled Haze or poor air quality Now a virtual runThe organiser cancelled the race, citing unstable air quality, and turned it into a virtual run from 18 October to 6 November 2026.
-
Chaiyaphum Marathon 2026
11 October 2026Chaiyaphum, Thailand
Postponed FloodFloods on 26 and 27 September damaged the organiser's office and the race packs, so the race has moved to 21 February 2027 at Chaiyaphum Municipal Stadium, renamed Chaiyaphum Marathon 2027.
-
Singapore Half Marathon 2026 Powered By JomRun®
11 October 2026Singapore, Singapore
Cancelled Haze or poor air qualityThe organiser, JomRun, cancelled the race because of worsening haze in Singapore.
-
University City Half Marathon 2026 Powered by JomRun
11 October 2026Johor Bahru, Johor, Malaysia
Cancelled Other or not stated Now a virtual runThe organiser cancelled the race and turned it into a virtual run, with results to be submitted by 6 November 2026.
-
HSN Putrajaya 2026
10 October 2026Putrajaya, Malaysia
Cancelled Haze or poor air qualityThe organiser cancelled the race because of haze; registered runners can still collect their medal and race kit.
-
Sagisag Half Marathon 2026 Cebu Leg
4 October 2026Cebu City, Philippines
Cancelled Other or not statedThe organiser, RSRJ Events Management, told runsea.run on 30 September 2026 that the Cebu leg has been cancelled due to unforeseen circumstances.
September 2026
-
Kuching Marathon 2026 (KM2026)
27 September 2026Kuching, Sarawak, Malaysia
Cancelled Haze or poor air qualityThe organisers called it off at the last minute because of haze in Kuching, affecting more than 13,000 registered runners.
-
Tebrau City Half Marathon 2026 Powered by JomRun® (aka BMW Millennium Welt Johor Half Marathon)
20 September 2026Johor Bahru, Johor, Malaysia
Cancelled Haze or poor air quality Now a virtual runThe organiser cancelled the race because Air Pollutant Index readings stayed in the unhealthy range, and turned it into a virtual run open until 25 November 2026.
-
PJ Half Marathon 2026
6 September 2026Petaling Jaya, Selangor, Malaysia
Cancelled Haze or poor air qualityPetaling Jaya City Council called it off at the last minute on health and safety grounds, because of unhealthy air quality from the haze.
Journalists are welcome to use these figures; please credit Run SEA and link to this page. Know of a race we've missed? Tell us.