There is only one unit of length in metric. The meter. Everything else is a multiple, which are typically base 10, and have standard prefixes. This applies to EVERY metric unit, including time. If you want to be weird and divide the meter into different bases, there's nothing stopping you.
Fun fact actually, your SAE units are defined in metric. Why? Because metric units are precisely defined instead of being based on the king's foot.
It makes more sense than this KLM ad: