More than 30,000 people, many of them dressed in costumes, participated in the 102nd annual Bay to Breakers race Sunday morning, making their way from the South of Market (SOMA) neighborhood, across the city to Ocean Beach.
According to preliminary results, runners from Ethiopia and Burundi were first to cross the finish line.
Ethiopian Tolossa Gedefa Fufi was the top male runner, completing the 7.46-mile course through San Francisco in 35 minutes and 1 second, race spokeswoman DeeDee Taft said.
The second fastest in the men's competition was American Ryan Hall, with a course time of 35 minutes and 40 seconds.
One the women's side, Burundi athlete Diane Nukuri-Johnson finished first, running the course in 40 minutes and 12 seconds, according to preliminary results.
Adrienne Herzog of the Netherlands came in second with a time of 40 minutes and 42 seconds.