The students that choose not to take part in rugby at the start of the year do a non rugby sport on Wednesday afternoons. Such sports include swimming, tennis, , basketball and golf. The teacher in charge of non rugby sports is K. Ryan. The time for non rugby sports is Wednesday between 1.15pm and 4pm.

Golf

Mr Hughes coaches the Golf Team out in Leopardstown Golf Coarse.

Tennis

With such a high demand for the tennis coaching, two clubs in the vicinity are needed to play the tennis. Monkstown Lawn Tennis Club and DeVisi Tennis club are rented by CBC for tennis coaching. in 2009 the team reached the Leinster Semi Finals

Basketball

Coached by Mr. MacMahon, basketball is the newest sport to CBC starting only last year. The new court is located beside the school office.

Swimming

Swimming is run in the Blue Pool Fitness centre just up the road from CBC Monkstown. Coaching and supervision is provided for the swimming group.