I did my circuit here in sunny Wales and did quite well for the first time for a while.
14 min. to high point 26 min to Machen bridge 56 min back to the start
I didn't manage to run all the way to the high point, walked quite a bit of that, but I did manage to run jog up the steep road out of Machen up to the cycle track. [The fact that it was past to young women walking in the same direction had absolutely nothing to do with it :) ]
My left ankle ached a bit on the up-hill sections but overall I felt good.