There are all-women's gyms and all-women's sports teams, so why not all-women sporting events? Athletic bigwig Nike has just announced its Women's Marathon in San Francisco in October of this year. What makes it different from a regular marathon? Here are some of the highlights:

• Participants get an official Finisher Necklace designed by Tiffany & Co., as well as a Nike Dri-FIT Finisher T-shirt available in women's sizes.
• The marathon also features a three-day interactive Expotique in Union Square.
  
• The after party consists of fine food and massages, among other fabulous offerings.
  

Interested? You have plenty of time to train -- the race isn't until October 19th. Better sign up soon though -- last year's event was a sell-out. For more details, visit the official website.