http://www.overthehillcc.com/clubComms/LeisureEventcalendar2013forClubreview14Dec12.pdf
Team Madigans John Lindsay Memorial Challenge runs in September, covers 80miles ish if you include the Torr Head section.
North Down CC's calendar doesn't list races so only leisure events/challenges
http://www.northdowncc.com/?page_id=3366
South West 200 ran by Omagh Wheelers is 160km
La Lantern Rouge have a 130km event
ps: you planning to ride any shorter events this year? I have a massive A5 sized two page calendar with emails/phone numbers if you or anyone else would like a copy.