Hi @Nal - Thanks for reaching out!
Tahoe Mountain Milers is a running group in the area that your partner may want to look into. Their website includes various ways to get more info and contact them, including their Facebook, Instagram, and Strava pages.
Additionally, you will see that we have moved your post to the Lake Tahoe Area board, where it will be more visible to locals of the Incline area. Hopefully some other runners in the region will weigh in with their suggestions too!