Help!: New Maps for existing event

Hi there, I am running an event for the second year running, link as follows:  http://www.mapmyride.com/event/united-kingdom/larne/5859750.  This year, we have done two new route maps for the event which I would like to incorporate into the event site above.  They are listed below...how do I do this? http://www.mapmyride.com/ride/united-kingdom/larne/567154487 and http://www.mapmyride.com/ride/united-kingdom/larne/1105656413 - kwalker@nspcc.org.uk