The Fog City Run, a challenging weekly 5K, invites runners to experience the iconic hills of San Francisco, California, on Wednesday, February 11, 2026, and every Wednesday year-round. This isn't your average city run; it's renowned as the "Hardest 5k in San Francisco," promising a rigorous yet rewarding adventure through the Marina and Presidio districts. Participants can anticipate typical race day conditions in February, with comfortable highs around 60°F and lows near 48°F, accompanied by a modest 16% chance of precipitation, making for brisk and invigorating running weather.

Starting and finishing at The Blue Light on Union Street, the course immediately immerses runners in San Francisco's distinctive topography. The "hilly 5km(ish)" route navigates various city streets, famously including the demanding ascent of the Lyon Street Stairs. Runners will conquer significant elevation changes, earning breathtaking views as they reach the top point of the course before descending through scenic areas like Lover's Lane. This isn't just a race; it's an intimate exploration of the city's charming neighborhoods and verdant expanses, offering a unique perspective of the iconic "Fog City".

The Fog City Run offers a unique, grassroots racing experience. With registration taken upon arrival for a small cash fee, it attracts a dedicated group of 5-20 runners each week, fostering a close-knit and competitive atmosphere. Runners seeking to push their limits and embrace the challenge of San Francisco's famed hills will find this weekly event a compelling and memorable addition to their running calendar. A locked closet is also available at the start/finish for personal belongings, adding to the convenience of this spirited urban dash.