Martin said that his decision to retire was influenced partly by concerns about race safety for riders and course design in the sport.
"Today I want to announce that the upcoming time trial and mixed relay World Championships will be the last races in my career," said Martin in a statement released on Sunday. "Such a far-reaching decision is of course not easy to make.
"Cycling has been a large part of my life for a long time, with highs and lows, big successes and losses, crashes and comebacks. What many young riders dream of, I have achieved.