The trip back from Key West takes four hours, so let's stop at mile market 65 for a stretch. The Long Key State Park has a small entrance fee, but it's worth it to see a flat beach that never disappoints me. This beach is left untouched, so often you can see the seaweed on the beach the way it has rested for millions of years. Another beach that is enjoyable is the Bahia Honda State Park, between Marathon and Key West. Now, let's start walking toward the sun on this beach.