David Ong ( DO) has five years of marathon running experience. An active member of several running clubs and community which include SAFRA Running club, MR25, SgRunners, along with his numerous valuable local and overseas marathon races experience, he is pleased to able to contribute back to the running community by offering his marathon pacing guidance to this year 's marathon participants again .

Encouraged by the many happy and grateful faces of whom he paced and guided across the Finish Line when he was part of the 4hr Pace Team in SCSM 2007 and also as Team FatBird's SCSM 2008- 4hr 30min Pace Group. He is back this year again as part of NB-TFB's 4hr 30min Pace Group. He is proud to be part of the 4hr 30min Pace Group, which collectively have decade of running experience and with their strong passion and commitment, there is little doubt that they will be able to motivate many runners and bring them across the 42.195 km finish line within the special 4hour 30min mark.