My go-to examples are Melanesians and Indigenous Australians. They sometimes have darker skin than people we in the West call black, and if we saw one of them walking down the street in a Western country, we would think they were black. But they are quite genetically distant from Sub-Saharan Africans. They just also have very dark skin pigmentation.
So are they both the same race? If not, what are we calling race here? Because I’ve only ever heard it described in terms of skin color.