The inaugural Kiprun Singapore Half-Marathon was unexpectedly shortened to 10km on Sunday, September 27, due to worsening haze conditions. Organisers made the decision early in the race to ensure participants’ safety, citing unhealthy air quality across the island. The change came as runners had already begun the 15km course, leading to mixed reactions from participants. Some expressed disappointment over the altered route, while others understood the health risks posed by the haze. The event, which aimed to promote fitness and community engagement, faced logistical challenges as officials worked to adjust the course. Despite the change, the race proceeded with a modified path, allowing runners to complete the event safely. Organisers have not yet announced plans for future editions, but the decision highlights the growing impact of environmental factors on sporting events.