Depends what type of strand I smoke and what time of the day I do it. If I wake and bake then that is my "peak high" of the day. Regs/Mids usually last me from 30 minutes to an hour. Dro can range anywhere from 3 hours to 6 hours depending on how good the shit is. I can get a hold of some super kush sometimes where one bowl gets you blowed for six hours straight. So it basically all depends on what I'm smoking and what time of the day I do it.