Millar was not selected to make the 2014 Tour de France team, a decision that left him 'devastated and shocked'. Millar retired from professional cycling after the 2014 season with his last competitive start being at the Bec CC Hill Climb in October. The final year of Millar's career was captured by documentary maker Finlay Pretsell for the film "Time Trial". Intended as an insight into the world of professional cycling, the film took on themes of aging and retirement as it traced Millar's growing realisation that he was unable to perform at his previous levels. "Time Trial" was released to cinemas in the UK on 29 June 2018.