RWGPS is wrong, as I know some sections are off road, but it’s classing them as paved.
I used the OSM Cycle maps, along with some routes from XX-Duro etc.
Day1: 20km roads, 50km canals and trails (little to no road at all), 30km road, then 60km (!) seafront (I hope it’s not windy!!!) paths and boardwalks etc. Then 60km road to Ingleton (which is pretty much all uphill)
20% unpaved
Day2: Pretty much all paved until 160km, whilst some of it is “off road” it’s the lovely yellow grit hard pack stuff. At 160km, I hit Dalby Forest and Harwood Dale, which is either gnarly MTB tracks, or fire roads. Do a long fire road around the back of RAF Fylingdales, too, so hopefully it’s well maintained and not inside the MoD Boundary, in which case I am screwed, as the main road to Whitby (A170?) is bloody awful and I do not wish to cycle on it!! But after that, it’s an old railway line into Whitby.
15% unpaved.
Day3: Old railway line pretty much for the first 40km, it’s then road to 120km, then dodgy canal paths around Leeds, Huddersfield to Slaithwaite, then road over the Pennines, then the way home is pretty decent off-road, which the Rapha Hell of the North used (I did it on my BMC with 28mm tyres, no issues)
20% unpaved.
@sowler - Yeah, the total elevation on Day 2 is mammoth, plus the distance.
Roadie equivalent would be 205km in 8hrs with 2,641m elevation…but it started raining and windyAF about 160km in, and I was in summer kit, with a wind breaker jacket. I was so cold after one descent, that I went into a pub car park and debated urinating onto my hands, so that I could at least change gear and use my brakes.
#CharacterBuilding
Day 3 is also a biggie, but…again, I have a comparator!
10:14 262.5km ride with 3,294m elevation.
That was utterly brutal - 1040TSS in one ride 
it was also 26° average!!!
Although it wasn’t so brutal that I didn’t do a 6km jog and 100km ride the following day, then a 162km ride the day after that.
Admittedly, that was in 2020, when I was about 15kg lighter, but if I’ve done it before, I can do it again!!!