The marathon starts downtown at 7 a.m. and tours St. Louis landmarks on city streets. Course limits are six and a half hours for the marathon and three hours fifteen minutes for the half, set by street closure permits. Walkers who expect to take longer can apply for an early start an hour before the main field, with eligibility judged from a recent finish time. Water and Gatorade stations line the route, and gels are handed out on the half and marathon courses. You must be 18 or older.
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