This article is about the Class III road numbered C27 maintained by North Ayrshire Council. For other roads numbered C27, see C27.
The C27 is a minor road on the eastern edge of Irvine. Its route seems to have hardly changed with the growth of the town, and so it is now a road of little significance compared to the wide new distributor roads it meets along the way. It originally started on the A71 to the east of Dreghorn, but this section is now relegated to a footpath, and so instead it starts a little to the north on Towerlands Road. It then winds northwards as a narrow S2 to a realigned junction with the new B769, and after a dogleg to the right it continues north as a reasonably narrow road providing access to some small housing developments. The C27 itself comes to an end a short distance later, the road being stopped up before it reaches the distributor road on the other side of the hedge. Originally, it would have continued along a road which no longer appears to exist, in full at least, to meet the old A736 Lochibo Road in Lawthorn. As a result of the growth of Irvine, the only classified or C class route that the C27 now meets is the B769 in the middle of the route.