Born on the Isle of Man, Long began his career with local side St Georges before joining Wigan Athletic in 2017.

He made his first-team debut during their EFL Trophy tie against Middlesbrough U23s in October 2017. On 20 February 2020, Long signed for Notts County on an initial one-month loan deal.

On 17 July 2022, Long signed for newly relegated League Two club Doncaster Rovers for an undisclosed fee, signing a two-year deal.