@ konchokzopa, 45 day course 2014 offered here East Coast, also you may want to check out other Goenka centers. You have to have many 10 day courses done, Satipatthana course work and if I remember correctly letters from your teachers to do long courses. I did it the sneaky way, I served and sat, served and sat through many months, again you need to have sat many 10 day courses and get permission from a teacher at the center you plan to serve and sit. No soft and plushy beds, 2 meals a day, noble silence, strict segregation of sexes. Strict observance of sila. You can find the schedules and codes of conduct on http://www.dhamma.org http://courses.dhamma.org/en-US/schedules/schdhara
I remember 3 month courses being offered but usually in India
I would love to do a 3 month retreat as well! I you find one let me know.
Form is like a glob of foam; feeling, a bubble; perception, a mirage; fabrications, a banana tree; consciousness, a magic trick this has been taught by the Kinsman of the Sun. Phena Sutta: Foam