淳安界首体育中心（铁人三项赛场）

The triathlon venue at Chunan Jieshou Sports Centre lies south of the centre of the Chunan Asian Games village in Jieshou township, Chunan county, one of the cluster's temporary venues, made up of an operations compound and the race courses. Racing follows the standard distance: a 1.5 km swim in the open water of Qiandao Lake, a 40 km bike leg on the lakeside highway and a 10 km run out and back along the shore and the roads around the venue, with athletes changing in a transition area inside the sports centre and finishing there as well. From 29 to 30 September 2023 the venue hosted the men's and women's individual triathlons, followed on 2 October by the mixed relay, three gold medals in all. The courses link the lake scenery with the Asian Games village and the velodrome: clear, high-visibility water for the swim, moderate rolling terrain for the bike and a flat, open run, a combination that makes it one of China's few genuinely scenic triathlon courses. In April 2023 it served as the Asian Games test event through the national triathlon champion cup and U-series, run over a 25.75 km sprint distance of 0.75 km swim, 20 km bike and 5 km run, and in July 2025 it hosted the Qiandao Lake round of the China Junior Triathlon Series. After the Games it continues to serve triathlon, open-water swimming and youth training as the main start and finish for the lake's triathlon events, sitting in the same 8.4 sq km cluster as the velodrome, the BMX track and the marathon swim course.