The Tour de Peninsula is coming up again. August 4th at Coyote Point. Those that have done this ride will know it offers great value for the $45 entry fee ($50 after July 1). http://supportparks.org/tdp/event.html
A lot of families participate together, some people don't wear lycra and there are almost none of the weekend racer types.
Route options include 20 miles, 31 miles, 56 and 63 miles. All routes include the great Sawyer Camp Trail alongside Crystal Springs Reservoir. The start/finish venue is Coyote Point Park, which is a warm, sunny, bayside location shaded by big eucalyptus trees.
Velo Paradiso members usually ride at their own pace and then meet for a post-ride lunch and story-sharing at a picnic table in the finish area. Rides begin at 7 a.m. and 8 a.m. depending on the route option.
The big question will be how to get to the ride venue in the morning. The start is too early for BART or CalTrain, so people will have to either ride or carpool. I will ride. If you can offer space in your car, post a comment below. If the passengers want a ride back with you, be sure to coordinate on ride distance.