One of the greatest joys of running in Miami is experiencing the astounding natural beauty. It inspires you run a little faster or farther. If speed in a wonderland is what you're after, Brickell Key is hard to beat. The jogging trail surrounding the southern island runs about a mile, and each step of the way, you look over fabulous bay views and extravagant yachts. If you're lucky, you'll glance a dolphin or manatee. The smell of salt and the aroma of flowers wafting in the breeze is a lot nicer than the smog of traffic across the bridge. It's an especially welcome respite during the summer. At least half the time, you'll be in the shade. After your jog, there are juice bars and restaurants — even spas if you want to treat yourself. But getting the blood pumping in a place as serene and scenic as this is good enough on its own.