SF One Day takes place on Jun 13, 2026. That's in 2 weeks.

Where is SF One Day located?

SF One Day is held in San Francisco, California, United States.

What distances are available at SF One Day?

SF One Day offers the following distances: 12HR, 12HR, 6HR, 6HR, 3HR, 3HR.

How do I register for SF One Day?

You can register for SF One Day through the official registration page.

What is the typical weather for SF One Day?

Based on historical data, you can expect temperatures between 53°F and 67°F on race day. There's approximately a 1% chance of precipitation.

SF One Day (3HR-12HR) - Jun 13, 2026 | San Francisco, CA

The SF One Day race on Saturday, June 13, 2026, offers a unique ultrarunning experience in the heart of San Francisco, CA. This fixed-time event allows participants to challenge themselves over 3-hour, 6-hour, or 12-hour durations, running individually or as part of a team. The course is a picturesque one-mile loop along the popular promenade and around the lagoon at Crissy Field, boasting continuous and breathtaking views of the Golden Gate Bridge, Angel Island, Alcatraz, and the expansive San Francisco Bay. Runners will find the terrain to be relatively flat, consisting of 60% crushed path and 40% asphalt, providing a manageable surface for sustained effort. A distinctive feature of this USATF-certified course is the option for runners to change directions at the start/finish mat after each lap, adding a strategic element to the long hours.

Participants can expect fully-stocked aid stations every mile, ensuring consistent access to fresh fruit, salty snacks, assorted candy, water, and electrolyte sports drinks. For those tackling the longer 12-hour challenge, hot soup and pizza will be available in the evening, providing crucial fuel as the day progresses. In an effort to promote sustainability, SF One Day is a cupless event, so runners should come prepared with their own reusable bottles or cups. Typical race day conditions in mid-June feature pleasant temperatures, with highs around 67°F and lows around 53°F, and a 0% chance of precipitation, creating an ideal environment for extended running.

The race starts and finishes at the East Beach (East Bluff picnic area) at Crissy Field, where portable toilets are conveniently located. This event stands out for its welcoming atmosphere, inviting runners of all levels to push their limits against the stunning backdrop of one of America's most iconic cities. Whether aiming for a personal best or simply enjoying the camaraderie and magnificent scenery, the SF One Day promises an unforgettable journey.