well...
i was figuring about 64 miles at 1/160th is still over 2000 feat of track... (.4 miles)
That's over 21 trips around the room, assuming you stay on the outside and the door swings out.
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Actually, it doesn't layout too bad -- it looks like if you use Alamosa as your fiddle yard under the table and leave out the narrows, dalton, coxo, and los pinos, there would be plenty of room for Windy Point, Cumbres, Osier, Toltec, Sublette, and Lava.
(I *really* like Lava -- I think it's the combination of the expansive view and that lonely tank.)
You end up with Chama up the middle island, taking up most of the lower/bigger level. The other end of the fiddle yard sneaks into the Dulce end of the Chama wye and you can even have daily San Juan's wander through.
Tom
P.S. I'm thinking I'll have to get a couple of those expensive K's from TexNrails.