[jhwhite]

No one knows the amount of thought I put into this same problem when building train tracks for my son but I had no idea how to solve the problem.

[phkahler]

>> No one knows the amount of thought I put into this same problem when building train tracks for my son but I had no idea how to solve the problem.

One piece of flex track bent and cut to length.

[bluescrn]

Or a 3D print: https://www.printables.com/model/126988-set-lego-duplo-train...

[mcv]

Unhook one piece, remove all the tension, and see how far the two ends you just created end up from each other. Not very scientific, but it works very well.