Thanks. I can see what you mean about the long transfers to get from north to south (or from south to north...), but I also notice that a lot of the race is packed together in the northern part of the country, + that it appears that on several occasions a stage starts where the previous ended.
Nor should it be forgotten that the roads themselves play a major role; if the roads to be used on the longer transfers a major highways (which are perhaps closed for the public) then a transfer of around 100K isn't that bad.
Besides; it's a helluvalot shorter than getting the race from Ireland to Italy! (Or from Denmark to Italy...)
Another point about the problems with the idea of starting on Ireland: How the **** are they gonna get the entire race-circus to Italy?
Here the riders, and other people, are actually the least problem. They can be put in a plane and flown, but all the stuff that'll need to be driven? From what I heard they pretty much spent the rest day driving down through Europe, unless there's a tunnel, or a rather big ferry, from Ireland to GB which I don't know about I can see a bit of a problem here... same from GB to the mainland.