|Location Map ( geo)|
|Distance:||5.5 miles (8.9 km)|
|Route outline (key)|
The C15 starts on the B816 just to the east of Castlecary and heads south, including a double dogleg to cross the railway line. A series of sharp bends turn the road eastwards as it becomes Lochgreen Road. It eventually reaches the B803 at Glen Village on the edge of Falkirk.