I have a new Cube Touring One Iridium 500 and put 102km on it down cyclepaths, forest and farm paths, river banks and canal sides over Xmas (56km was flat down the Mersey and Bridgewater Canal but 46km was a venture up into the High Peak from Stockport with about 1750 feet of elevation).
Total weight of rider, bike and kit carried about 125kg.
The flat 56km used up 25% of the battery.
The hillier 46km used up about 35%.
As there is zero resist on the motor, unless you are very old or unfit you don't really need to use assist on flat tarmac and Eco is enough for things like riverbanks and forest paths if flat.
Slight uphills can be done with Eco or Tour. Gradients above 5% you will likely want a blast of Turbo although you can climb them on Tour. Not sure the steepest it can cope with on Turbo but I expect it to be around 15%. Certainly no issue with 10% gradients.
My figures (for a total weight of 125kg and a rider taking it easy and contributing perhaps 150-160 Watts on average) suggest a winter 'flat' range of 220km and a hillier range of perhaps 130km. So 50-60 proper 'hillier' miles 'might' just be doable.
What I don't know is how much your total weight is or how much hillier your 'Pennine miles' are compared to going up to the High Peak from Stockport (and back again). Or how fit you are (a fit rider could add maybe 100 Watts to my quite leisurely input).
Incidentally, I'm not sure where in the Pennines you are but I bought my bike from a very good bike shop in Halifax:
https://www.ukbikesdepot.com/