The Across the Bay 10k is one of the largest, most exciting mid-distance events anywhere. 4.35 miles of the 10k course takes place over water on the Chesapeake Bay Bridge near Annapolis, Maryland. The event lasts all weekend and will include a 10k, kid’s fun run during the race expo at Navy-Marine Corps Memorial Stadium, and a live concert on race morning at the finish line in Queen Anne’s County that is free and open to all.
This 10 kilometer, 6.2 mile point-to-point course will take runners over the eastbound span of the 4.35 mile long Chesapeake Bay Bridge, which reaches 186 feet at its tallest point. Runners will experience water vistas dotted with sailboats and cargo ships from atop a major dual-span bridge that doesn’t allow pedestrian traffic at any other time of the year. This event happens once a year and is the only way to cross this majestic span on foot.
Originally from: http://www.ironman.com/triathlon/events/americas/running/across-the-bay-10k.aspx#ixzz5VLy1sLLV