[Symbiote]

I immediately recognized metres + miles (for a road distance) as British, I was also born there.

The USA should be feet and miles.

Canada should be metres and kilometres.

But you did say North America, it seems these might use miles per hour for road speeds, so they might not want metres and kilometres. I don't know if they want feet, yards or metres though.

Antigua, Bahamas, Barbuda, British Virgin Islands, Grenada, Puerto Rico, St Kitts and Nevis, St Lucia, St Vincent and the Grenadines, or the US Virgin Islands.