It appears that you have a numerical value in mind that separates mass rape from rape, and in your case it looks like you consider fewer than 1000 rapes to be unworthy of a mass rape classification. Additionally, there is a certain minimum territory that in your mind is necessary for a mass rape to occur in, and that figure is entirely nebulous.
That brings us into a realm of the ridiculous, so brace yourself:
According to you, in a hypothetical scenario where 5000 nuns get raped in Vatican City (an area of 0.2 square miles) in a single day, this is not mass rape. Likewise, if 999 nuns get raped in Canada in a single day, that's not mass rape either.
It gets even more ridiculous from here: what if, hypothetically, ten women in Israel get brutally raped by 101 terrorists each in a single day in a concert venue that is only a thousand square feet in area , is it still not mass rape as per your calculus? How about 50 women getting brutally raped by 101 terrorists each, would that satisfy your threshold to qualify as mass rape? What if it happened in Canada and not at a concert in Israel, would that make any difference?
I warned you it would get ridiculous.