Organizers of the Nike Women's Marathon say the thousands of runners who ran a 26.2 mile course through San Francisco helped to raise more than $18 million for leukemia and lymphoma research.
More than 20,000 runners entered the marathon Sunday, which is the largest fundraiser of the year for the Leukemia and Lymphoma Society.
The money raised goes toward research and treatment for blood cancers, which account for about 10 percent of the nation's cancer deaths each year.
The winner of the full marathon was Nora Colligan of Austin, Texas. It took her 3:06:30 to run a grueling course that that included a start in Union Square, then eventually ended at the Great Highway.
Each finisher received a Nike T-shirt and an official finisher necklace designed by Tiffany & Co.