Bay to Breakers 12K

Registration Open
San Francisco, California, United States
May 16, 2027 at 8:00 AM

The Lowdown

Bay to Breakers 12K is a point-to-point road race that runs from the Embarcadero in downtown San Francisco to Ocean Beach on the Pacific coast, tracing the width of the peninsula. First run in 1912, it is one of the oldest continuously held annual footraces in the United States and has grown from a small footrace into a citywide costume party: elaborate individual costumes, themed running clubs, and the signature 13-person Centipede teams are as much a fixture as the race itself. The course climbs the short but steep Hayes Street Hill near Alamo Square around the 2-mile mark, then flattens through the Panhandle and Golden Gate Park before finishing on the sand-dusted Great Highway at Ocean Beach. The race set the Guinness World Record for largest footrace with roughly 110,000 participants in 1986, and modern editions still draw tens of thousands of runners, walkers, and spectators lining the closed streets. Beyond the 12K, Bay to Breakers also offers a 15K "Breakers Bonus" option and team entries; race weekend includes a shakeout run and community events around San Francisco. With chip timing, a finish line festival, and a laid-back, anything-goes atmosphere, it remains one of San Francisco's defining annual traditions.

Race Day

Weather Forecast

🌥️
spring
cool

Elevation

Terrain Profile

⛰️

Relatively flat course

Participants

Field Size

🎊
25,000RUNNERS

Major marathon

Crowd Rating

Spectator Support

🎉
8/ 10

Excellent spectator turnout

Course Highlights
1

The Embarcadero

2

Hayes Street Hill

3

Alamo Square

4

Golden Gate Park (JFK Drive)

5

Ocean Beach / Great Highway

Destination

San Francisco, California, United States

US

Est. Hotel Cost
$280/ night

Average rate for 3-star accommodations near the start line

0
Time Limit
5 hours

Eligibility

  • Open to all ages; strollers are not permitted on the course
  • Centipede teams must run in costume as a linked group, typically 13 members

Required Documents

  • Photo ID for bib pickup

Entry Methods

  • Online registration via the official website
  • Centipede team registration for themed groups

Cancellation & Refund Policy

All registration fees are non-refundable per official policy

Known for elaborate costumes and the signature 13-person Centipede running formation

Set the Guinness World Record for the largest footrace with about 110,000 participants on May 18, 1986

One of the oldest continuously run annual footraces in the United States, dating to 1912

A 15K "Breakers Bonus" distance option and team/Centipede entries are also offered alongside the 12K

MarathonOS

Training for this race?

Track your training, follow a plan, and prepare for race day with MarathonOS.

Download on the App Store

Community

Stories, tips, and race-day snapshots from runners who have tackled this course.

Community Reviews

Learn from fellow runners and share insights that will help the next person toe the line.