Bay Area 100

The Bay Area 100 starts at California Memorial Stadium on the UC Berkeley campus and finishes on the track at Skyline High School in Oakland, 100 miles later. The organiser puts the climbing at over 18,000 feet, and runners get 33 hours from the 5 a.m. start. It is part of the UTMB World Series index.

The first race ran on June 13 and 14, 2026, and Patrick Rabuzzi won it in 16:54:56. The 2027 race is on Saturday, June 12, with the field capped at 300, and a finish is a Western States 100 qualifier.

Point to point, from California Memorial Stadium in Berkeley to the track at Skyline High School in Oakland, over 18,000 feet of climbing by the organiser's figure. The 2026 results give the course as 100.7 miles. The limit is 33 hours, and for 2027 there is no early start.

Entry is first come on UltraSignup, capped at 300 for 2027, with a waitlist invited in order if the cap is reached. The fee is $425 before taxes and fees, rising to $450 after December 11, and entry closes on June 11, 2027. The race recommends a 50-mile finish within a year of the race, and runners without one can ask for an exception.