What is the dimension of a double-bend track?

Answer 1

I'll assume this to be in the British sense of double bend--2 curves american.

A running track is 400 meters around. It is both halves of a full circle, with two equal straightaways between the halves. The IAAF, the world governing body, prefers "the bend" in tracks to be 36.5 meters in diameter, making the straightaways about 85.3 meters long. Multiply times the lane width (8 or 9 lanes times preferred international lane width of 1.22 meters) and you could end up with a full track width of 58.5 meters and a length of 143.8 meters. But then some tracks are built into more narrow stadiums and a few have a wider "pitch" which can affect those specific numbers in different directions, but its all math. The wider the turns the shorter the straightaways and vice versa.