Jogging distance

[Pirao]

I recently started jogging to improve my cardio, and because I have started to put some weight since I hardly did any exercise since Summer. So, what's a good running distance? I'm currently running 4,5 km (more or less) on hilly terrain (with lots of ups and downs).

[zere0wn]

When you get tired but not too tired?

This is kind of a dumb question.

Intervals might be better for you.

Read the FAQ?

[Pirao]

Yeah, I read it a bit but found nothing specific on what I'm asking, I'm not training for fighting or anything, just wondering what's a good distance to keep in reasonable shape.