In his teenage years, Doyle trained in the Korean martial art of Kuk Sool Won, and developed his running style by adding his own freerunning movements to the martial arts techniques he had learned. Doyle began his freerunner career by winning the 2007 Art of Motion competition in Vienna. He broke his leg in the competition while attempting a trick from a 12-foot jump during the finals. This left Doyle with a plate on his fibula and a 33 cm bar with 14 screws down the core of his shin bone. Despite this setback, Doyle made a full recovery.
In 2011 Doyle won the Art of Motion competition again. He received eighth place in the Red Bull Art of Motion 2012 (staged in Santorini, Greece), following a tour applying urban acrobatic techniques at the sites of the seven wonders of the world.