This article is about the Class III road numbered C651 maintained by DfI Roads. For other roads numbered C651, see C651.
The C651 is a Y shaped route which starts on the A5 west of Ballygawley, heading south. The road soon crosses the C650 at Ballynasaggart followed by the B34. The road crosses over the A4 and heads south eastwards leading to a scattered crossroads at Lismore Road, a former alignment of the A28 before it was rerouted onto Favour Royal Road to the south and subsequently downgraded to the B128. Soon the road comes to a T junction from which it continues both north and south. To the south the road soon reaches the B128. To the north the road returns to Lismore Road and continues north from a junction to the west, eventually reaching the A4 west of New Ballygawley Roundabout.