CS7 is my highlight.
You want to try streatham then Thornton Heath.
There are slower but nicer ways to TH.
I used to go Camberwell, Dulwich and Crystal Palace or over the top of Streatham Common (turn left at the tea hut) and down via the back roads. Both routes provide some hills.
@biarittz started
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CS7 is my highlight.
You want to try streatham then Thornton Heath.