Today, Carmichael remains active in the motocross industry, involving himself with track design[4] and commentating on supercross broadcasts.

[6][7] After a dominant amateur career, Carmichael made his professional debut in 1997 for the Splitfire Pro Circuit Kawasaki team.

In 1998 Carmichael proved his ability to dominate indoors as well, winning all 8 of the 125cc East coast Supercross rounds, as well as the "East/West Shoot-Out" event.

Carmichael again displayed his outdoor prowess in the 2000 AMA Motocross championship, winning the title in his rookie year despite challenges from Sebastien Tortelli.

Leading into the 2001 Supercross season, Carmichael showed a newfound commitment to his physical conditioning, bringing on former professional cyclist Aldon Baker to oversee his training regimen.

In 2003, Carmichael won both Supercross and National titles again; winning 7 races indoors where he faced a stiff challenge from Chad Reed.

Carmichael also scored the US Open of Supercross title and led Team USA to a convincing victory at the Motocross des Nations.

In the 2006 Outdoor National Championship season, Carmichael once again dominated all comers, including James Stewart, in winning 9 races and placing second twice.

However, at the season finale at Glen Helen Raceway, Carmichael suffered a bad crash while challenging James Stewart for the win and was unable to finish the race.

Carmichael capped his career with a winning performance at the X-Games and a victory with Team USA at the Motocross of Nations in Budds Creek, Maryland.

Under the tutelage of veteran Mark Martin, Carmichael started his transition to stock cars by racing late models throughout the country.

In 2010, Carmichael and Monster left KHI and went to Turner Motorsports, where he would gain 9 top tens en route to finishing 13th in the points.

30 Chevrolet in the Nationwide Series with teammates James Buescher, Reed Sorenson, Jason Leffler and Mark Martin.

On September 2, 2011, Carmichael achieved his first career pole at Atlanta Motor Speedway in the Camping World Truck Series.

Along with World Enduro champion Ivan Cervantes, they are tasked with helping develop the prototypes for the new line of off-road motorcycles by Triumph for use in motocross and supercross.