Quite a few people on here talking about their 'times' but you've got to understand that, if you're going for a 'time' whenever you go out for a training run, your fitness will not improve much at all. The way to do it is to focus predominantly on aerobic zone running, i.e. a slow, conversational pace. If you want to get faster and run further, about 80% of your total weekly mileage should be in the aerobic zones where you don't get out of breath at all and at which pace you could easily hold a full conversation for the full duration.
If you're just getting into it, I would make that 100% of mileage actually. If you then want to do some specific speed work, this should be once a week (maybe twice with more experience) but even then, it shouldn't be flat-out chasing 'times' but at a controlled threshold pace or a specific interval session.
You'll thank me later.