This article is about the Class III road numbered C329 maintained by DfI Roads. For other roads numbered C329, see C329.
The C329 is a road on the western side of the Mourne Mountains in south County Down. The road starts on the coastal A2 in Rostrevor and crosses the river towards the B25. The road continues north out of Rostrevor and soon TOTSOs left. Climbing upwards, the road meets the C332 at a T junction where it once again TOTSOs, this time to the right. Eventually the road crosses over the Moygannon River further upstream on the way up to its high point. Down the other side, the C331 turns off to the north. Soon the road comes to an end in the village of Mayobridge, at a central junction with the B7 and the B8.