Yeah either is cool. There's a fairly nice loop (80% singletrack, 20% bikepath) on a much larger scale; from Bourke Rd underpass, you ride north (towards Heidelberg), just following all the singletracky stuff along there next to the river (there's plenty there) till you get to Manningham Rd, then you cross the river and come back the other way on the other side; the track comes out behind the veneto club; then you can follow the bike path and some singletrack back along the back of Bulleen Park, through the back of the golf course, and it comes out back at the footbridge.