When counting both sidewalk stairways on the last (west) block of Elizabeth, climbing steeply into the Twin Peaks neighborhood from Noe Valley, got 281 steps for the north side and 218 steps for the south, Hoffman to Grandview.
At Grandview to the left is 24th St. and just past that is where 76 steps for the Cuesta stairway climb under Market from Grandview up to a sign for three streets: Corbett / Portola / Cuesta. To the right from Grandview at the top of Elizabeth you’ll see a spiral walkway to the pedestrian skyway that will take you across Market St.
Here are a few upcoming street fair dates I've been able to find online so far. I’m hoping for free samples of stuff; maybe these larger celebrations will be more promising.
Union Street Festival - June 4-5
Haight-Ashbury Street Fair - June 12
57th Annual North Beach Festival - June 18-19
SF Pride 2011 takes place June 25-26 at Civic Center Plaza where the two-day celebration is free and open to all.
Fillmore - July 2-3