The B3306, also known as the West Cornwall Coast Road, is a major road of southwestern Cornwall. It connects St Ives in the east to St Just in the west, and eventually joins the A30 road to the northeast of Sennen in the southwest of the Penwith peninsula. This thirteen-mile road is often voted one of the greatest driving roads in the United Kingdom for its scenery, with most of the road having views both across the Bristol Channel to the north, and the Cornish Moorland to the south. It hugs the coastline for a great proportion of its length, which contributes to its natural beauty.
The road begins in the town of St Ives, adjacent to St Ives Library, on the junction with the A3074 road at 50°12′41″N 5°28′51″W / 50.21139°N 5.48083°W. In St Ives it is initially known as "Gabriel Street" and then "The Stennack" and "Higher Stennack". The road ends at the junction with the A30 road at 50°5′15″N 5°40′13″W / 50.08750°N 5.67028°W, outside St Just. Notable settlements it passes through (from St Ives to the southwest) include Zennor, Boswednack, Treen, Porthmeor, Morvah, Bojewyan, Pendeen, Trewellard, Carnyorth, Botallack, Kenidjack, St Just, Bosavern and Kelynack. The bridge near St Just, dated to the early 19th century, became a Grade II listed building on 21 September 1973.