I forgot you're in Oerlikon too. We should go for a run from Oerlikon sometime. I only recently started running in my own free time. Here are the two general routes from Oerlikon i've tried so far:
1. Head down to Bucheggplatz, turn right and along the side of that mountain (not sure of the name, maybe Hongg). Turn right into ETH, then you can basically get home via some fields and Seebach. One time i pushed on to Katzensee, but my sunday roast nearly burned!
2. In the other direction run along towards the Uni, then work your way left towards the Zoo. Come over the other side of that hill, down into Schwamendingen, and then a straight run back to Oerlikon.