Riders can take advantage of the opportunities to enjoy the numerous beach accesses. County parks often include amenities, such as picnic tables, cold water, showers, and toilets, which are inexpensive or free to cyclists. State Highway A1A changes names many times on its journey along the coast. This is especially true as it nears Miami. Often it is located adjacent to an aquatic preserve or wildlife refuge that offers bird watching. Florida has an extensive, though sometimes confusing, network of bicycling facilities ranging from two-foot bike lanes or shoulders to separated bike paths and sidewalks. For some stretches it may be better to use the sidewalk rather than the road, but in highly trafficked beach areas the sidewalks will be for pedestrian use only. Approaches to nearly invisible short bridges are usually marked with "frogs", "buttons", "turtles", "slugs", or rumble strips. Campgrounds are almost nonexistent from Jupiter until south of Miami. After Florida City, there is a ride with no services, potentially heavy traffic, and abundant alligators. Gators should always be given a wide berth, and riders must be ready to sprint if necessary. Alligators can reach speeds of 35 miles per hour for very short distances.