SF City Guides runs its Memorial Day Weekend blitz starting Saturday morning — 50-plus free walking tours spread across the long weekend, covering neighborhoods from the Haight to the Embarcadero to Chinatown. Tours run roughly 90 minutes, leave from public meeting points, and need no reservation on most routes (check sfcityguides.org to confirm; a handful of specialty tours do book up). Separately, the "Memorial Day" Weekend Disco Inferno lands Saturday night at a venue TBD — confirm location and ticket price at the event listing before you go, as these shows move.

The City Guides tours are the real operational story here. The program has been running for decades, staffed by trained volunteer guides, and the Memorial Day weekend edition is one of its highest-volume weekends of the year — meaning more departure times, more obscure routes, and more options if you miss one. The disco night is a one-off for the holiday weekend, so if that's your Saturday, lock in tickets early; these tend to sell out by Friday afternoon.

For the walking tours: BART to the stop nearest your chosen route (Powell for Union Square-area tours, 16th St Mission for the Mission routes). Wear flat shoes. Don't park downtown — you'll walk enough that you'll want BART home.

With two hours: Pick a neighborhood tour you don't actually know that well — North Beach or Japantown over the usual suspects — and let the rest of the afternoon follow from wherever it drops you.