It's always interesting to see or really get the dimension of ones layout and you can be as vague as you like. But, Mine has two long straightaways and about a 30" radius turn around. Roughly 15 x 4, but in the waist she's about a size 10 or about 1'6".
Just single track but I got some Kato double track. Hence the one above is the freight route and the on the bottom is going to be part city and suburbia. And may the same size above, but a bit more meaty in the waist. As you guys know how these thing start out and the next thing ya know. She like gained 10 pounds and what do you put there but more rice patties.