This is the 627th most frequent Swedish word.
sundsvalls
"Sundsvalls" is not a standalone word but the possessive form of "Sundsvall," a city in Sweden. It means "of Sundsvall."
The word 'Sundsvalls' is used here in a possessive form, referring to something that belongs to or is associated with the city of Sundsvall.
Jag bor nära Sundsvalls centrum.
I live near Sundsvall's center.
In this sentence, 'Sundsvalls' is utilized as a possessive noun, indicating that the history discussed belongs to Sundsvall.
Sundsvalls historia är rik och fascinerande.
Sundsvall's history is rich and fascinating.
Here, 'Sundsvalls' again shows possession, signifying that the marathon is an event hosted by or associated with Sundsvall.