I need to get to the Hamilton Go Bus stop at King & Dundurn on a Sunday. I have figured out that the 1A King bus runs to there. Bus which bus stop on campus serves this bus? And how do I know when to get off the bus?

You can actually take the 01 Lakeshore West GO Bus to Hamilton @ King and Dundurn. The stop is between Mary Keyes and Thode Library.

McMaster GO Schedule

Well, that is kind of pointless since I was trying to catch a GO bus in the first place and the GO busses that leave from the station beside Keyes don't run on Sundays. But thanks for being my only reply. I ended up walking.

The 1A goes directly through campus to downtown quite close to the GO station, however I'm not sure if it runs on weekends.

The 51 goes right through campus to the GO centre downtown.

You could have asked your question at Compass! That's our/my job!

On Sunday, your only option on campus is the 5A Rosedale at about 25/55 past the hour. There is no 1A or 51 service on Sunday.