The UMG is a regional 3000GT and Stealth gathering that happens every year the weekend before Memorial Day in the month of May. We usually have around 50 3/Ses that come from around the Upper Midwest for three days of fun in Wisconsin Dells, WI. We all stay at the same hotel and have a fun schedule of events.
If you hover over the “future events” tab above, the UMG should be listed there. If you hover over the “past events” tab above and then hover over the “Upper Midwest 3/S Gathering” tab, you’ll see all the pages for the past UMGs.
The main UMG page can be found here.
There is also more information on the 3SI Wiki page