When your in BCT,are you allowed to leave the base?

I'm uming you're refering to BCT in the Army. And NO, you will not be allowed off base. You will not have time to go off base. You will have a full days schedule almost every single day. The days you do get some personal time, I suggest you rest as much as possible. It is not worth the risk to try doing things you aren't supposed to do. Keep your nose clean, it's only for 8 weeks, you can do it. At AIT, you will have much more freedoms and it will probably be a little more relaxed. Unless you're infantry, then it's like an extended BCT. LOL Good Luck