|Location Map ( geo)|
|Distance:||7.1 miles (11.4 km)|
|Meets:||A90, A948, B9005|
|Route outline (key)|
The C90B starts on the A90 at Upper Hawkhillock and heads south via Dudwick and Overtown, amongst other tiny settlements, to reach the A948 Ellon bypass. Before construction of the bypass, the route continued into town along what is now Knockothie Brae to reach the A948, Golf Road. However, it appears that the route now multiplexes west along the A948 to the junction with Golf Road, and then follows the former line of the A948 into the town centre, where it terminates on the B9005.