The main A591 road connects Grasmere to the Vale of Keswick over Dunmail Raise to the north, and Ambleside to the south. In other directions, Grasmere is surrounded by high ground. (At Christmas 2015, the A591 was washed away on the Keswick side of Dunmail Raise, causing traffic to make a long detour. The route reopened in May 2016.) To the west, a long ridge comes down from High Raise and contains the lesser heights of Blea Rigg and Silver How. To the east, Grasmere is bordered by the western ridge of the Fairfield horseshoe.