Edinburgh to Dundee Forth rail bridge which is very iconic Route is 36miles as the crow fly's Class 170 Class 158 Class 68 Hst
This is the route i would most like to see added. Having both the iconic Forth and Tay bridges would be fantastic. Adding to that the Fife Circle. Would prefer it also to travel through the dock street tunnel and further north, running along the North Sea towards Arbroath and beyond.