This is the route I usually practice my 5k on. It leaves from my house and ends up with about a 1/2 mile walk.
Description in words: from 41 Elizabeth Pl. to Elizabeth St to Broadway to Weaver, to Merrimon at the Mojo Cafe; go around to Merrimon / Murdock, then up Murdock to Hillside; go up Hillside to Madison; go straight up Madison to Chestnut, and down Chestnut to Merrimon. 5k.