How far to run today?

I've been running on and off this holiday but haven't managed to get a proper schedule going. I ran almost 3k Friday and I have run 5k quite a bit earlier a month ago. Would it be too much to run 8km today or should I just do 5k?
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+1 y
I did 8k in the end. I was very surprised that my legs barely ached at all. I must run faster next time!
How far to run today?
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