The circuit is awesome with a hairily fast section back down into the Grassmarket from George IV bridge aswell as a cobbled climb up Victoria Street. This didn't feel as stiff as I remember but I doubt i'll be saying that after the 15th time of going up it flat out! If I make the start list.
Here's a few spy shots:
Repaved section in the grassmarket - super smooth!
Bit of a tight squeeze through here onto the Victoria St climb. Good positioning key me thinks.
Half way up Victoria St and the pave becomes a little rougher. Gaps big enough to swallow a folding bike wheel whole!! ; )
Right turn onto Candlemakers Row could be tricky in the wet! From here a very rapid descent back to the Grassmarket. And repeat.