My units are in Kilometres, but when I set a run target distance it changes to miles?

I have always run in kilometres and have all unit settings in kilometres. When I run I usually set a target, eg. 5k or 10k. 
recently the Pace and Distance data screens have been displaying these in miles. 

Does anyone know how to change it? I have checked my unit settings in my phone and watch and both read Kilometres. When I look at my auto lap settings this is also in miles.