UVM is similar to a block schedule, in that you're taking one main class at a time. You can view the list of classes here:
http://www.uvm.edu/medicine/admissions/?Page=curriculum.html. However, there are a couple of longitudinal classes. One is PCR (Professionalism, Communication, & Reflection), which meets once a week on either Tuesday or Thursday from 4-5:30. The other is DIV (Doctoring in Vermont), which starts in the spring of your first year; once a week on either Wednesday or Friday afternoons you get clinical experience with a local preceptor. This isn't every week, you just have a minimum number of sessions you have to do, so you control the schedule for it.
There's not one exact standardized schedule for each class - the days are typically longer during the anatomy and physiology class (Human Structure and Function - HSF) just because all of the lab time, but they're not as long during most of the other classes. In the class the first years are taking now, last week they had lecture from 8-12 each day, on Monday from 1-3 they had a lab, Tuesday from 1-2:30 was a small group discussion (kind of like PBL), and Thursday from 1-2 was an optional review session for this week's exam. There was nothing officially scheduled on Wednesday and Friday afternoon so that those who had set up a DIV day with their preceptor could go if they needed to. And then everyone had their weekly PCR session on either Tuesday or Thursday afternoon. That's pretty typical for the majority of classes - lecture mostly in the mornings, afternoon sessions a couple times a week, then the required weekly longitudinal courses. There is a good deal of variation from week-to-week, but overall on a non-PCR day, it's very rare to be there past 3 or 4 PM, except maybe during HSF.