All of the events will take place at the O-Zone Recreation Centre, Ormeau Park, Belfast. Sunday's event begins with the Under 8 and Under 10 races at 11.30am, full details are below.
Under 8 start time 11.30 entry fee £2
Under 10 start time 11.30 entry fee £2
Under 12 start time 12.00 entry fee £4
Under 14 start time 12.00 entry fee £4
Adults and under 16 start time 13.00 entry fee £5
Prizes will be awarded after the final race.
For more details go to www.xmtb.co.uk or e-mail info@xmtb.co.uk