By Mitch Phillips LONDON (Reuters) – A new “T100” race series for longer distance triathlon was launched on Tuesday, with eight star-studded 100km races featuring a prize pot that looks certain to tempt the best of both Ironman-distance and Olympic distance athletes. Jointly launched by the Professional Triathletes Organisation (PTO) and governing body World Triathlon, the T100 will feature races comprising a 2km swim, 80km bike and 18km run that will last around a TV-friendly three hours. Initially an eight-race programme, it will kick off in Miami in March, before moving to Singapore, Califo…