I had what they deem rapid cycling. I would be manic for a few months straight then depressed for months then back to manic for months. There was seldom any relief or stability in mood in between. On par for 4 or more a year but they lasted months so same as defined for the other criteria.

I too find it confusing when it comes to ultraidian or ultra rapid and the criteria for mania and hypo, I think the criteria for mania is more than a week or 10 days..something close. It does get confusing. I know at least for myslef mania takes a little days to get off the ground, more like I would get hypo first and within a week full blown mania would follow. But everyone experiences it quite differently.

I agree with Anne and Christina that mixed episodes might be more likely.