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About 1.5 million people are expected on Sunday to watch the 40,000 runners in the LaSalle Bank Chicago Marathon. One of the coolest parts of this epic annual event is the course itself. Winding its way through a dozen city neighborhoods, the marathon gives runners and spectators an excuse to tour the town. Here are five spectator spots along the 26.2-mile route.

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1. Energizer “Keep Going” Zones (Adams and Franklin Streets, other locations): Spectators joining the fray at these marks are provided with Energizer Bunny ears (while supplies last) to invigorate the heads of the pack. The watchers can also enjoy music in exchange for rejuvenating cheers for passing runners.

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2. New Balance Cheer Zones (Near Old St. Patrick’s Church. Also at the finish line): Gratis cheering items will be handed out in the West Loop, while available, to watchers. So if you flake out and forget to make a sign for your racing loved one, head for the red tents for substitute spirit paraphernalia.

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3. Occidental Brothers Dance Band Int’l (southwest corner of Adams Street and Ashland Avenue): Classic Central and West African dance music, such as soukous, highlife, rumba and dry guitar, will float through the air to entertain runners on the second half of their trek.

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4. Chinatown (Cermak Road and Wentworth Avenue): One of the more popular spots is destined to remain so, thanks to the festive decor, dragon dancers and plenty of places to shop and eat before and after you belt out some encouraging cheers.

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5. The International Mile (35th Street, between State Street and Michigan Avenue): Saluting the many nationalities drawn to run the marathon each year, supportive messages in native languages, colorful flags and costumed dancers will greet runners as they pass this station celebrating global diversity.

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LaSalle Bank Chicago Marathon: 8 a.m. Sun.; free for spectators, registration closed for runners. Begins at Grant Park, 500 S. Columbus Drive; 312-904-9800.