Katoh started karting in 1990 and entered four-wheeled racing in 1992 with Formula Toyota.

He would then compete in the Japanese Formula 3 Championship, with a highlight being a 6th place at the Macau Grand Prix.

Katoh entered the All Japan Grand Touring Car Championship in 1997 with Kraft and has competed mainly in that series since; his best championship result was a 2nd place with Cars Tokai Dream28 in 2006 and 2007.

In 2021, Cars Tokai Dream28 and INGING merged to form a collaborative entry known as muta Racing INGING; Katoh would drive for the team alongside veteran driver Ryohei Sakaguchi.

[5] In addition to Super GT, Katoh has raced in the 24 Hours of Le Mans multiple times.