I've visited a few churches in Durban and most are not what I would call racially mixed. It appears most churches either have no whites or next to no whites or they have all whites. I've found a couple good exceptions, though and am still looking.all of them.
but unless you live in Umlazi or Kwa-mashu you ar unlikely to drive there, but of you diod,would be welcome anyway.
with the exception of the Afrikaans version of the Methodist Church most churches integrated in the 80's