Actually the Giant gas station is at Corrales road. Iris is north of that. Idalia is the major NE-SW trending road in Rio Rancho. It cuts straight east just before Rio Rancho Blvd aka NM 528 aka Pat D'Arco Memorial Highway. From the east side the best way to get there is take the NM 550 exit and go south on NM 528 (going by the "north portal"). Idalia is the third light.