Should you wish to go to HRH Prog II Festival in the far end of Wales next March, it will indeed be an epic journey to get there. The journey from Reading to Pwllheli will take more than seven hours. And worse, five of those hours will be spent in one of these things.
It’s almost, but not quite the longest journey time wise you can make in a class 158. Liverpool-Norwich or Glasgow-Mallaig is slightly longer, but there are only minutes in it.
Last time I rode the Cambrian coast line it was back in the days when there were still loco-hauled workings on Summer Saturdays, and I remember a single class 37s struggling up the grade towards Talerddig summit with nine coaches, and reduced to walking pace by the time it reached the top of the bank. Those were the days.