Rainy City is a member of the Women's Flat Track Derby Association (WFTDA).

[1] The league was founded in September 2007 by thirteen skaters,[2] By October, it was already practicing three times a week.

[3] Since 2008, Rainy City has organized the annual "Knocktoberfest", a four-team tournament.

[4] In April 2011, it was accepted as a member of the Women's Flat Track Derby Association Apprentice Program,[5] and, in December 2012, it graduated to full membership.

[6] Starting in May of 2018, Rainy City will host a six team WFTDA sanctioned tournament called "Reign the Pain" at the RollerDrome in Centralia.