|Location Map ( geo)|
|Distance:||5.5 miles (8.9 km)|
|Meets:||A948, C110B, B9170|
|Route outline (key)|
The C112B starts on the A948 at Auchnagatt and heads south at first, curving to the south west as it crosses the C110B near Dykenook. Turning further westwards, the route becomes windier as it crosses the low hills to meet the B9170 near Tillyfar.