This article is about the Class III road numbered C129 maintained by Fife Council. For other roads numbered C129, see C129.
The C129 starts at the Queensway Roundabout to the east of Glenrothes town centre, and heads south on Church Street, turning right with Church Street at the second roundabout. After passing along the southern side of the Kingdom Shopping Centre and its car parks, the route leaves the town centre behind and becomes South Parks Road. This continues west, crossing several more roundabouts, including one with the B969, until it finally comes to an end at a T junction. The C128, Glenwood Road continues ahead, with no obvious reason why the number changes, whilst the C127 turns left.