there’s a long bit through derby where you’ve routed yrself along a riverside path. it’s probably fine but i would personally reroute on a proper road, or i’d avoid derby altogether (getting in and out of cities is a massive PITA and it eats up time). in fact, from about 65-87km on day one, it’s all cycle path which isn’t google streetviewable. surface might be shit.
same goes from 110-119km, 140-144km (easy re-route), 158km (easy re-route),
I’ve been through that bit of Derby cause it’s by the station and football ground, and it’s solid path, or at least the 5k of it I know is. Routed it so it comes off that path earlier, then passes over the north eastof Leicester which avoids the rest
obs streetview ain’t the be all n end all of routing but if there’s no streetview and i’m not familiar with the area i’d avoid (unless something like strava heatview says otherwise)