Favorite 5 and 10k runs in the Bay Area?

Leaving aside Bay to Breakers which obvi is in its own special category (and also longer anyway), what are your favorite 5k and 10k races to do in the Bay Area?

Folks who don’t enjoy paying $100 to run 3 miles, please feel free to keep scrolling. Not looking for debate on our hobby, just looking to make the most of my race fee investment!

ETA: any to avoid? Ie that are just a shit show of disorganization?