She did not take part in the 2016 Rio de Janeiro Games, criticising at the time what she saw as British Cycling's "unfair" selection process for the road race team.
"Today marks both the end of one chapter in my career, and the start of a new one," the 28-year-old said in a statement on her website.
"After 14 years of dedicating my life to a bike, I've decided to go out on a high after the satisfaction of achieving everything and more in the sport than I ever set out to." (Reporting by Alan Baldwin; Editing by Hugh Lawson)
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)