82 Hellissandur
This is a leg of the party bus connecting Stykkisholmur to Borgarnes. The bus, by the way, is usually an overgrown minivan which may or may not have a bus number on it. Wherever you start from, the bus drives along happily to the Vatnaleið Mountain Pass about 25km from Stykkisholmur. There, you meet up with another bus going to or from Borgarnes. Depending upon where the drivers want to end up, you either transfer bus or additional souls join.
The 82 runs along the north coast of Snæfellsnes to the westernmost town of Hellissandur. There are a few inexpensive guesthouses and hostels — we stayed 3 days at The Old Post Office in Grundarfjörður and found it quite lovely.
On the return trip, we continued south to Reykjavik via Borgarnes. The van was even smaller, and occasionally the driver would interrupt a nervous tourist ignoring the passengers staring at her to ask if she was waiting for a bus?