Zantman's Rock is located 34 miles (55 km) to the west of Land's End, Cornwall, and 6 miles (9.7 km) west from the Isles of Scilly. Viewed from a distance, it is barely visible on the surface of the waters. It is 2 miles (3.2 km) north of Bishop Rock Lighthouse, and about 0.25 miles (0.40 km) northeast of the Crim Rocks.