Although the settings for the overwhelming majority of RuneQuest games are Sartar and New Pavis, don’t be afraid to send your adventurers further afield, especially if you are armed with the Cults books and the Guide to Glorantha.
A few good options:
Cross the Wastes. The Desert Trackers supposedly know routes across the Genert Wastes. Have your party join in on a trek to Kralorela, going across the Wastes, past the Tunneled Hills and Plateau of Statues, and all the way to the Iron Forts. And then let them be outsiders in a very different land!
Holiday in Nochet. The biggest and richest city of the world awaits you! Within are scheming matriarchs, mercenaries, trader princes, sorcerers, Seshnelans, Teshnites, Vadeli, and even Pamaltelans. Here’s your Fritz Leiber opportunities! And from Nochet you can take a ship ANYWHERE!
Exile in Handra. Madipoor in Glorantha, this island mercantile city-state is somewhere anything can be obtained for a price. Let your Humakti wear an eye-patch and lose money gambling until it is off to adventure! From here Ralios, Ramalia, and Seshnela are as easy as a hop skip and a jump!