It takes place on the Sunday 8 days after the monthly
SBAY Pizza meetings
at 3 or 4PM.
So you can determine the date as the Sunday following the
4th Saturday of the month. (On months starting on a Sunday,
it's the 5th Sunday of the month. Otherwise it's the 4th Sunday.)
If that's too much to figure out,
make a point of checking the calendar here. ;-)
Note that the date may change each month due to mitigating circumstances, so
you may want to check here anyways to make sure the day, time, and location
are what you expect.
Routes and starting points may vary each month.
But they can be found on the
sbay.general newsgroup
and at
http://www.sbay.org/geek-ride.shtml
This is meant as a social/recreational event among sbay.org participants,
their friends and others with similar technical interests.
For serious bikers there are more appropriate club rides and events
in the area.