Rest stop is at the Gray's Bay Dam, about half-way.

Will be riding my road bike with 700x28mm tires, however, others with even 700x23mm tires have ridden this route without issue.

While the route will get you the complete route, please know that I do have ad hoc changes (conditions, closures, etc), so it's best if the group stays together and follows the leader at the rated pace. 

Optionally could combine this 10 AM ride with the 1 PM ride to double your (mileage) day.