Prepare for a challenging yet incredibly rewarding experience at the Fog City Run, a quintessential San Francisco 5K taking place on Wednesday, June 17, 2026. This isn't your average flat city sprint; starting from The Blue Light at 1979 Union Street, this "5km(ish)" route winds through the scenic Marina and Presidio districts, earning its reputation as potentially the "Hardest 5k in San Francisco." Runners will navigate a hilly course, including the notorious ascent of the Lyon Street Stairs, reaching the top point near Pacific Avenue before descending through Presidio Avenue and Lover's Lane, offering breathtaking views along the way.

The Fog City Run is more than just a race; it's a vibrant, weekly gathering known for its intimate atmosphere, attracting 5-20 participants eager to tackle San Francisco's iconic inclines. This casual event requires cash registration upon arrival and offers a unique, self-supported running experience through some of the city's most picturesque neighborhoods. Typical race day conditions in mid-June are ideal for running, with comfortable highs around 67°F and lows around 54°F, alongside a 0% chance of precipitation. Embrace the challenge and discover the unparalleled beauty of San Francisco on foot with the Fog City Run.