I am pretty spoiled. Right outside my door is an urban staircase to Bernal Heights Park atop Bernal Hill. In a city with some pretty spectacular views, Bernal Hill has some of the best.
Not only is there a great 1-mile loop around the hill with some solid elevation gain, but there are trails -- real trails! -- on the hill. They are great for technical trail running practice. They are steep, narrow, slanted and scantily-maintained. Single track feels like a fire road after running at Bernal.
On those rare days I actually wake up and run my home course, it's amazing how much better my day is.