There are a number of competition avenues you can explore. Spires CC run a number of events over the year from open, club and TT races. A limited Competition licence will cover you for any club event. Open racing is only for those who hold a full Competition licence. There are a number of different types of Cycling Ireland membership designed to suit all types of rider.
A limited competition licence allows you to compete in all domestic competition except open road races. It replaces the Restricted licence choices and also covers Club Competition. In other words you may use a Limited Competition licence to compete in Track, BMX, Off-Road, Time-Trials, Hill-Climbs, Club Racing, Bicycle-polo and Artistic Cycling. This licence is not specific to one discipline, it covers them all. It does not include Open Road Racing.
This licence qualifies you for racing in any discipline (including offroad, bmx, TT etc) in Ireland. If you want to race on the road in open races, this is the type of licence you want.
The racing calendar can be found on the Cycling Ireland website.