I'm looking at a website for a Sportive/charity ride. If the participant rides at an average of 18-20 mph ( they're possibly on an ebike ) they start in group one. 16-18 mph in group two and so on. The classic ( 162km ) ride starts earlier than the beginner ( 98km ) ride. A sweeper van follows the wait what was that, measured in KM. It said rides at 16-18 MPH. So I have to convert 98km into miles then divide by my average speed to estimate how long it will take to complete. I won't know where the water stops are because I measure distance in miles. I don't know how far is left to go, for the same reason.
I have to travel to the event by car, using a mileometer, observing speed limits set in miles, my fuel is measured in miles per gallon, the map I'm using to get there is in miles.
My point is the UK relates to miles rather than km. So why do event organisers and hardcore, lycra clad roadies insist on quoting how many km the ride is when everybody else is used to planning cycle trips using miles?
Is it because the Tour De France is in kilometres? As much as I want to think I'm riding the TDF, it's 60 miles around the borders on a wet Autumn day, devouring jelly babies & cheap isotonic drinks from Poundstretchers, surrounded by other portly MAMILS. If I was being chased by a sprightly old man in a devil costume I might pedal faster. Maybe it's because km sounds more impressive than the equivalent miles.
If anybody asks how much my bike cost I'll tell them 2619.22 French Francs and I'm using it to cycle 96560.6 meters on the wrong side of the road. If I can also raise £1 per meter I'll be quids in.