The four-time Olympic champion secured 83,524 votes to take the crown ahead of superbike rider Rea’s 80,567.
Para-athlete and Strictly Come Dancing star Jonnie Peacock came third with 73,429 votes.
“It is pretty amazing and hard to think about,” Farah said after his win.
“I didn’t imagine I was ever going to win this but anything can happen. If you work hard you can achieve your dreams.”
Take a look through the gallery above to see the voting results in full.