Participants, some as young as six, from the Kids/Junior category competed in yesterday's TRI-Factor Triathlon held at East Coast Park. The seventh edition drew more than 2,500 competitors. Japan's Ken Koike won the men's division in 1hr 59min 41sec while national triathlete Winona Howe, who represented Singapore at the SEA Games in June, took the women's title in 2:19:28.