This live feed is in Napa Valley for the marathon:
Napa Valley Marathon Live Feed
The start is preceded by a brief invocation and The Star Spangled Banner. There are 13 aid stations along the course. The vineyards that parallel the race course provide world-class scenery but also have a downside. Most of them feature deep ditches to accommodate irrigation and rain runoff that severely limit parking on crossroads that intersect with the Silverado Trail (race course).
As you finish, a digital clock will display your unofficial time. A disposable chip will record your official time. The time on the digital clock may not match your official time. When you cross the finish line, you will be greeted by a volunteer who will present you with your finishers medal and help you find whatever assistance you may need. Due to provisions in road-use permits, the marathon course is opened to traffic and closed to the marathon at 1:00 p.m. At 1:00 p.m., marathon officials and a representative from law enforcement will collect bib numbers from all participants still on the course.