C18 (West Lothian)
|Location Map ( geo)|
|Distance:||3.9 miles (6.3 km)|
|Meets:||B792, C17, C12, C21|
|Route outline (key)|
The C18 starts on the B792 south of Tophichen and heads east, crossing the C17 below Cairnpapple Hill. Continuing east, it winds down into the valley of the Mains Burn, crossing the stream between South and North Mains, and then following close to the north bank to reach the C21 at Longmuir.