There was a standard design for an 11+ lap wooden track designed for buildings with a square floor plan. It was usually the mezzanine (partial upper floor) of an athletic facility where most activity was on the ground floor. The one I remember was at Phillips Academy Andover, and during my high school years of indoor track, it hosted the Northern Essex League, which was a group of public high schools (might have been one or two Catholic or other private), most of them in Middlesex County (not Essex). As far as I know, that league did not exist for other sports at that time. I remember that track as being about 152 yards (hence 11+) both for the upstairs wooden track (highly banked, and used for warmup and 2 mile races only) and the dirt track underneath (there was an infield dirt straight, complete with padded wall for the short dash/hurdle guys to crash into).
There were a number of these tracks in northeast USA when I was young. There was a LRC MB thread on this subject some years back (I think at least five) and a number of people described their experiences, and their were several photos of other facilities that I immediately recognized as being of the same design. I did a quick search on this, and it did not pop up. Maybe malmo remembers it, but he has noted noted it yet on this thread. I checked the Phillips Andover site, and they have a much newer indoor track, so presume the one I ran on has been torn down, although it was still around when that previous thread was posted on.