As an American Brit (born in NY, moved to UK 15 years ago), I have resisted transitioning my brain to the metric system. But running may force me to..everyone here says their pace and distance using km. even my training app will give me weird decimal distances to run in miles, bc it’s really kilometre based. for 5k/10k i convert to miles for my splits. Ugh I’m too stuck in my ways, I cant switch now 🤷🏿‍♀️