Athlete Pham Tien San won the first medal in Duathlon for Vietnam at the 31st SEA Games on May 15 on Tuan Chau beach in the northern province of Quang Ninh. San finished first in the competition with a time of 1:55:58. Ferbriade Rudi and Johan Jauhari, both of Indonesia, secured the silver and bronze medals a time of 1:56:12 and 1:57: 36, respectively. VNA Photo: Công Đạt