Duathlon at the 2019 SEA Games

The duathlon competition at the 2019 SEA Games in the Philippines was held at the Subic Bay Freeport Zone from 2 to 5 December 2019.

Competition schedule
The men's and women's individual race took place on 2 December 2019. The mixed relay event was originally scheduled to take place on 4 December 2019 but was rescheduled to take place earlier on 2 December 2019 due to the anticipated weather caused by Typhoon Kanmuri (Tisoy).

All times are Philippine Standard Time (UTC+8).

Participating nations
A total of athletes from 6 nations were scheduled to participate (the numbers of athletes are shown in parentheses).



Men's individual

 * Key
 * Running denotes the time it took the athlete to complete the running leg
 * Cycling denotes the time it took the athlete to complete the cycling leg
 * Running denotes the time it took the athlete to complete the running leg
 * Difference denotes the time difference between the athlete and the event winner
 *  *  The total time includes both transitions

Women's individual

 * Key
 * Running denotes the time it took the athlete to complete the running leg
 * Cycling denotes the time it took the athlete to complete the cycling leg
 * Running denotes the time it took the athlete to complete the running leg
 * Difference denotes the time difference between the athlete and the event winner
 *  *  The total time includes both transitions