Bay to Breakers draws tens of thousands of runners

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The 106th Bay to Breakers is underway in San Francisco, and it drew yet another large crowd wearing creative and festive costumes.

Organizers say up to 50,000 participants are expected to be taking part in the 12k race, which kicked off at 8 a.m. from Main and Howard Streets in San Francisco before ending at the breakers on Ocean Beach.

The first place finisher was Philemon Cheboi with a time of 34:48. The first female crossed the finish line was 23-year-old Buze Diriba, of Ethiopia.

Streets from downtown to the beach will be closed to traffic during the run and over 150,000 spectators are expected to line the route. 

There are more than 1,000 portable toilets along the route, and changes to some of the rules have improved things for people who live in the area.

There is now a ban on floats, and alcohol is not allowed- although some find a way to get around it.