The French always use minutes, and beyond about a couple of minutes it is infuriating because it is so unreliable depending on time, weather and traffic conditions.
Thinking about the question 'How far is it to Preston?'. Well I know where it is and where I am, I would probably ask the person what they needed the information for and frame my answer accordingly. If they were just curious, I would probably hazard 'over 250 miles'. If thinking collecting a purchase there from ebay. I would say 'the round journey will be a long day's drive.
If they asked about York, where DS lives the answer would be 199 miles and it usuall takes between 3.5 and 4 hours to go there.