FWIW, I have ridden a little bit around Dieppe, and I can tell you that it's not flat, although it's easily doable on a moderate gear (42 X 17 or so). Getting out of Dieppe towards Rouen is a bit of a fag, I seem to remember 1 long hill with cars hissing past my left shoulder at 100km/h but after 10k there are nice quite D and C roads. The descent into the Seine valley could be a bit nuts tho...
FWIW, I have ridden a little bit around Dieppe, and I can tell you that it's not flat, although it's easily doable on a moderate gear (42 X 17 or so). Getting out of Dieppe towards Rouen is a bit of a fag, I seem to remember 1 long hill with cars hissing past my left shoulder at 100km/h but after 10k there are nice quite D and C roads. The descent into the Seine valley could be a bit nuts tho...