The marathon starts at Brannan Street on Silverado Trail in Calistoga and follows that road to Vintage High School in Napa, with a net drop of 303 feet. The half marathon starts at Conn Creek near Highway 128, the halfway point, and ends at the same school. There is no parking at either start, so you take the bus included with your entry. The marathon has 12 aid stations and a strict six-hour cut-off, with a shuttle at mile 22.7 collecting anyone who has not arrived by 12:45 p.m.
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