This article is about the Class III road numbered C670 maintained by DfI Roads. For other roads numbered C670, see C670.
The C670 consists of several roads heading out of the village of Drumquin in west County Tyrone. The route to the east initially leaves the B84 and follows Main Street before branching into three separate roads: Creaghmore Road, Claragh Road and Manse Road. The Creaghmore Road and Claragh Road segments both eventually terminate on the B50 west of Omagh while the Manse Road segment swings around and meets Claragh Road. To the west of Drumquin the route follows Willmount Road north westwards. The road soon TOTSOs right before bending left, maintaining a generally westward direction of travel. At its junction with Tullyard Road the class III status of the road ends, the road ahead being unclassified.