Aileen Reid's challenge for a place at the 2016 Rio Olympic Games will start tomorrow in Japan.
The Londonderry-born triathlete, who was placed 43rd at the London games two years ago, will take part in the Yokohama World Triathlon Series, which is the first event in which Olympic qualification points are available.
Reid will hope to improve on her 16th place finish in her first race of the season in Cape Town.
After a disrupted winter training Aileen's coach Tommy Evans said that she "wasn't a million miles away in Cape Town."
The Yokohama race will see the 33-year-old go up against Jodie Stimpson, who has won the opening two World Series races of the season. American Gwen Jorgenson is also one to watch.
In the men's race Conor Murphy of Armagh will be looking to put his Cape Town result behind him.
Murphy found himself well out of contention at the back of the field after a tremendously difficult swim and found it impossible to gain any ground as the bike packs ahead were working well together.
He eventually came home in 42nd place.
Murphy did do much better in the World Series Opener in Auckland a few weeks earlier.
He had a solid swim and did well on the bike too before clocking a sub-33 minute run on what is considered to be the hardest course on the ITU circuit and came home in a creditable 22nd place.
Murphy is 34th overall in the World Series standings, while Reid is lying 28th having only competed in one race so far.