|Location Map ( geo)|
|Distance:||7.3 miles (11.7 km)|
|Meets:||A971, A971, B9071|
|Route outline (key)|
The C306 starts on the A971 at Hulmaless and heads south across a largely unpopulated landscape to the crossroads at Gruting. From here, a spur heads north west to rejoin the A971 near Bridge of Walls, whilst the mainline turns left and winds around the head of Seli Voe before resuming its southerly direction to reach the B9071 near Hestinsetter.