August 29, 2012 - Seattle, Washington - Nuun, the top-selling sports drink in run, bike, and outdoor specialty stores, will be the Official Hydration Sponsor of the2012 and 2013 Nike Women's Marathon and Half Marathon events (NWM). The Nike Women's Marathon will return to San Francisco for its ninth year on October 14, 2012 and will celebrate its 10th year in October, 2013. Nuun is the Official Electrolyte Beverage and will be served at all on-course aid stations as well as the start and finish lines.