The Race

TThe Bay Area 100 feels as remote as a mountain hundred, but it runs on the edge of a major metroplex — which means your crew, your family, and your friends can actually get to you. With 18,000ft of vertical, this race is designed to challenge you while also showing you the best views, ascents, and descents the SF/Bay Area has to offer. Navigate across bay crests and exposed ridges, through redwood forest, and along lake shore on fire trail as you push through Bay View, Las Trampas, Lake Chabot, and Redwood territories. Each section offers its own unique triumph.

And there’s something more that makes this race special — the people who run it, crew it, pace it, and cheer it. More than twenty Bay Area running and community groups played major roles in getting runners to the finish line in 2026, and they’re excited to take part again. With so much commitment and participation, we’re hearing the Bay Area 100 referred to as “The People’s 100”: tough enough to earn, approachable enough to attempt, and supported in a way that inspires success.

2026 Athlete Guide

It’s here! Check out the Athlete Guide for all the info on the race, aid, and how to prepare.

Interactive Course

Your journey awaits! Checkout the course on Strava.

Some Basics

For all the detail, please check out the Athlete Guide. Here are a few fast facts for the browsers among us.

Live Tracking and Live Stream

The Bay Area 100 offers live runner tracking along the course. We will also have a Live Stream that will appear on YouTube.

Time Limits, Cutoffs, Aid Stations

The Bay Area 100 starts at 5am and has a 33-hour time limit. There will be cutoffs starting at 11:30 am.

Buckles and Stuff

There are two flavors of finisher’s buckle. The One Day metal for sub-24 hour finishers and the True Grit metal for sub-33 hour finishers. Please note that early starters are not metal eligible.

Qualifying Times to Enter

We recommend a 50-mile race within a year of running this race. You’ll be asked for your race, its date, your time during pre-registration. If you do not have a qualifying time, you’ll also have an option to ask for an exception. Our goal is to simply ensure you are likely to succeed.

Qualifying Status - UTMB

The Bay Area 100 is a UTMB index race. You time will be entered within two weeks of completion.

Training Camps

There will be a 3 day Training Camp from April 17-19 that will cover 85 miles of the course. Saturday night is a free gathering at Sports Basement for athlete briefing, food, and fun.

Registration is open Ultrasignup.