Home of all things offroad in Irish Cycling. Includes race calendar and online registration
Link to IMBA’s trailbuilding info. Gives a great insight into how to build sweet singletrack.
Other places to MTB
Rostrevor, Co Down - http://www.mountainbikeni.com/rostrevor
7 stanes Scotland – www.7stanes.gov.uk
Mountain Bike Wales – www.mbwales.com
Highland Wildcat Trails, Golspie – www.highlandwildcat.com
Oakridge, Oregon - www.mtbikeoregon.com