Baz started competitive motorcycle racing in the Catalan Championship in 2003 . Within this championship, he rose to the 125 cc class two years later. In 2007 he switched to the European motorcycle championship . Initially, he worked there as a test driver on a Yamaha YZF-R6 . In 2008 he became a driver for the YZF Yamaha Junior Team and was the youngest driver in history to win the championship. In ten races he achieved three wins and two pole positions. After this success, he rose to the FIM Superstock 1000 Cup the following year . In both 2009 and 2010 he finished eighth overall. In 2010, Baz also had three wildcard appearances in the British Superbike Championship . In 2011 he competed in the Superstock 1000 Junior Cup and was European champion at the end of the season . He also took part in the first seven events of the BSB that year.
Superbike World Championship
Loris Baz made his first appearance in the Superbike World Championship in 2012 as a substitute driver for the injured Spaniard Joan Lascorz . He started in the Kawasaki Racing Team on a Kawasaki ZX-10R at the side of the British Tom Sykes . At the end of the season he finished 13th overall with 122 points. He also achieved a victory and a fastest race lap, making the 19-year-old Frenchman the youngest superbike rider in history to set the fastest lap in a race. In 2013 he stayed with the team. With another win, 180 points and eighth overall, Baz was able to improve his result from the previous year. However, he was unable to take part in the last five events because he fell while warming up for the race in Germany on the Nürburgring and injured his back . The 2014 season denied Loris Baz in Kawasaki. He was able to improve again, although he did not win for the first time this year, and ended the season with 311 points in fifth place overall.
In 2018 Baz returned to the Superbike World Championship after a three-year break and this time started for Althea- BMW .