What are the correct dimensions for an IAAF 400 meter track?

A standard athletics track has an inside running distance of 400 metres. Most tracks have an 85 metres straight on each side, with curves at either end with a radius of 36.41 metres. There are usually eight lanes, each 1.22 + or - 0.1 metres wide.

Refer to IAAF Competition Rules Handbook 2010-2011 (downloadable from the IAAF website). Rule 160 provides the technical details of an IAAF 400 m track measurement