A wiring structure of a flexure includes wiring that includes a trace of first polarity and a trace of second polarity and transmits signals to and from a head that is supported with the flexure and writes and reads data to and from a recording medium and an interleaved section formed at least partly in the wiring where the traces are each divided into sub-traces, the sub-traces being alternated in a width direction of the wiring, the sub-traces of each trace being connected to each other on each side of the interleaved section, an outer one of the sub-traces of each trace being narrower than an inner one of the same. The wiring structure reduces partial dips in the frequency characteristic of signal transmission loss (loss-to-frequency characteristic) of the wiring at the interleaved section.