This is such a crazy race. San Francisco really goes all out for this 12k. Over 50,000 runners this year. we were in corral D, and didn't make it across the start line until 30-35 minutes after the start. This is a pretty rowdy race, but some people do take it seriously. Tons of people dress up and wear crazy costumes -- many, many run fully naked. Great crowd support, and an all around party.

The course isn't difficult except for Hayes Hill, which is extremely tough. Tshirts weren't dry fit, but they're a nice cotton Under Armour vneck (for females).

If you plan on really taking this seriously, go in one of the earliest corrals. There are lots and lots of walkers and it can get jammed early on. Overall, a really fun race, and definitely one to put on your racing bucket list!