Butter Lap -- a casual, no drops ride around the city every Wednesday evening, starting at the Ferry Building at 7pm and ending at Bender's at 19th & S Van Ness (not shown) around 9-9:30. Typical wait-for-stragglers-and-regroup locations (also useful if you're trying to intercept the ride) are at: 1. The top of the small Fort Mason hill (mile 2.3 on this map; you can hover your mouse over the hill on the elevation profile to see where it is) 2. The top of the Presidio hill just past the bridge (mile 6) 3. The Palace of the Legion of Honor parking lot (mile 8) 4. Briefly at the top of the last hill before the beach (mile 9.1), before a no-pedaling race to the bottom. 5. The beach (mile 10.5) 6. The end of the panhandle (mile 14)