Tens of thousands of visitors will make their way to Forest Park this weekend for the Great Forest Park Balloon Race. It's one of the park's most popular annual events. The Balloon Glow is Friday, September 20, 2013, at 7 p.m. The Balloon Race is Saturday, September 21, 2013, at 4:30 p.m. Admission is free. For more information, check out my article on the 2013 Great Forest Park Balloon Race.