In 2018, Irvin finished first place in the Veteran A category during the annual Na Dva Kola Oko Bola hosted by the Croatian Cycling Federation.[2] Also in 2018, Irvin finished first place in the first mountain bike marathon held in Rab, Big Four.[3] In 2019, he finished first in the Uspon na Bikovo by climbing the Bikovo mountain range in a time of 1 hour and 56 minutes,[4] a race in which he originally finished in second place when he participated in 2017.[5] In 2021, Irvin won the gold medal in the Master A category at the Balkan MTB Championship held in Bihać.[6]
Irvin is part of the Faust Vrančić cycling club, which was established in Šibenik, Croatia.[7] In 2018, the club had their best marathon run on the Vlašić mountain in Bosnia and Herzegovina during the XC Marathon Vlašić,[8] in which Irvin placed 2nd within category M35.
