He spent on time on from Wigan at Leigh Centurions, Dewsbury Rams and Rochdale Hornets in the Championship.

Kilner played his amateur rugby league for the Oulton Raiders.

The following season he spent time on loan at two more Championship clubs, Dewsbury and Rochdale.

At the start of the 2020 season Wigan loaned him to Toronto Wolfpack but because of the COVID-19 pandemic he did not make any appearances for the Canadian side.

Kilner started from the bench centre and became Wigan Warriors player #1108.