adding 100 000 links from "pretty paths facets"

Hello,

I have generated around 100 000 pages using facets with pretty paths such us: http://localhost/category/cars/in/london how can I add those 100 000 pages to xml sitemap programmatically ? I could add them one by one, but that would take ages.

I can generate the list of links via "mergewords" or something along those lines but the question is how to import this massive list of links ?

Please advise

- I have just had idea, that I could potentially "import it as one huge menu" with 100 000 items in it and than index this menu with sitemap xml, but I'm not sure if it is correct approach ?