m74 for me…long,boring and no decent tottie to eye up as there are no traffic jams! 
The road that takes me to work on those dark dank mornings is my crappiest road its only 5 miles but seems a lot longer but its strange cos on the way home it seems quicker and nicer !
M74,I love Scotland but that motorway has To be the most boring road ever.I’m falling asleep by the time i get to Lockerbie northbound.
Feel a little bit hypocritacal as I’ll be driving up there in a month to go on holiday but I’ll have my mrs with me then so I wont be so bored.
The M40 can be boring too, specially early morning/late night with sod all on it and miles of nothingness
Yes, especially between 9 and 8a even the long curve around Ot-moor that lorries like to tip over.
The A66 to Workington gets boring especially doing 40mph 