I live on the main land in Jensen Beach but haven't started riding in a group. Check out Cycle Werks in Port St. Lucie. Chris is a good guy and the owner. He will direct you. I ride over the Jensen Beach Causeway to the Stuart & Sewell's Point causeways into downtown Stuart. Get Oceola Street as soon as you can to get off E. Ocean Blvd. I go over the Old Roosavelt Bridge and up the Green River Pkwy. There is a large sidewalk on the GRP that is great for cycling.