It looks like a perfect beach day on Sunday so we are extending the ride to Port Dover and then back on the Lynn Valley Trail. Joe said they recently rode the gravel portion of the trail on their road bikes and it was fine. It adds about 10 km to the medium and long routes. There is also the option to dine in Port Dover. The fish tacos are amazing. Bring your bathing suit, sun block and a bike lock.
Here is the link to the route. I have also added it to the GCBT site. You pick up the route at Port Ryerse road and Radical Road on the medium route and Gilbert Road and Radical Road on the long ride.