Critical Mass (?)

A few weeks back I scoped out a rumor of a critical mass in Portsmouth, that I had vaguely scraped up deep in the bowels of the internet. No one else even knew what it was about and I couldn't find the page that said what/when/where it was again. Of course, the bowels of the internet aren't where people go trolling for information about outdoor activities, generally--so it's no surprise that no one else heard about it.

However: last week I saw this flyer:

That says "Friday Sept. 26th -- Strawberry Bank Parking Lot -- Ride starts at 6:00pm."

I think it's going to be raining but maybe I'll check it out.