How long is 91B ALC?

Have you considered, and it may be a crazy idea, to look in ATRRS? It will not only give you the start dates but give you the course length as well. Something to consider for yourself and to teach to those underneath you, rather than going out and requesting readily available information, do some research yourself first.

I am reserve just got a slot for phase 1 and 2 total class time 5 weeks 2 days

ALC at FT Lee was 8 weeks.

I am active duty and currently slotted to go to Camp Shelby Mississippi which is a national guard base for only 33 days for ALC

You can access ATRRS by going to AKO
“self service” link
“My training” link
Scroll to ATTRS-student center and you can do a course search.
91BALC course code is 091-91B30-C45

They change it all the time. Should be 8 weeks but when I went thought in 2017 they took off a week.

6 weeks I thought. Correct me if I’m wrong.

When I went in 2015 it was 2 months

Advanced Leader Course is MOS specific. I would ask my Company First Sergeant.