I'd love to know as well. I recently moved to the Boston area, and love to get connected with other Marketo users!
Hi Vanessa and Kanako we have an active Marketo User Group here in Boston and I'm apart of the steering committee. You can check out our upcoming events on our website, linked below. Please also register on the website if you haven't already. You will then receive our email communications on upcoming events!
I look forward to connecting with you both at the next event.
September 19th, but i haven't seen any info yet on location/time. As the previous commenters said, the external Boston User Group site is a good one to sign up for and bookmark.