Running

greenwich park is awesome for practicing hills the path on the far right of the park (standing with your back to the thames looking south) is a beast, it's hard enough running down it, let alone up it but you feel like rocky when you get to the top.

That's exactly the hill I was wishing I had practised on whilst dying on my arse the other day. So what's the deal, do I just run up it until I'm on the brink of cardiac arrest or is there some sort of method?