Liam grew up in a house steeped in cycling tradition with his father having been an international road and track rider in the mid to late sixties. Yearly visits to watch the Rás meant by the age of nine Liam was racing his bike. He also played a lot of rugby and that became his main sporting passion throughout his teens, when he was involved with the Leinster Youths squad.
After completing his degree and masters in Food Science, Liam found himself with more free time and began running recreationally. A challenge in 2004 to complete a local sprint distance triathlon was issued and having dually passed his brother 200m from the line, Liam became immersed in the sport.
His first season proper was spent in the US, where he had moved to for work, and saw him collect a number of podium finishes in the North West, as well as a state championship in his adapted Idaho. Upon returning home in 2006 he claimed the National Long Distance Championship. 2007 saw Liam claim the first age grouper and 10th overall at the Ironman UK 70.3 and a plethora of podiums at domestic races.
His results earned Liam an invitation to be part of the Triathlon Ireland High Performance Squad, where he worked with Olympic coaches Chris Jones and Gordon Grawford. His natural ability for long distance racing was identified and he made his Ironman debut in Austria 2009, setting a new Irish Ironman record of 9hr 2mins, finishing 2nd in his age group and qualifying for the World Championship Hawaii Ironman, an event he would compete in three times.
Liam continued to race internationally winning his age group at Ironman Wisconsin, Abu Dhabi Long Course Triathlon and twice claiming medals at the British Middle Distance Championship. In 2013 he travelled to Ironman Copenhagen and finished 13th overall in a time of 8hrs 45mins to reclaim the Irish record.
Throughout his career Liam has worked with a number of high level coaches, such as Simon Ward and Catrionia Morrison, as well as studying extensively the teachings of respected triathlon coaches such as Joe Friel, Gordo Byrne. He has a massive enthusiasm for sport and often picks up performance and training tips from other sports. He is also an accomplished cyclist, racing as an A1 in Ireland.