Aaron spent the '04/'05 season toiling in relative obscurity on the Rock Maple Racing series, and that was a long way from his native Alberta. He's back on the WPSA National circuit for '05/'06. Once seen as a potential star, Christensen's career has been slowed by injury.
A talented though injury-prone rider, Aaron is another member of the WSA National "Tweener" class, meaning he competes in Semi-Pro Open but Pro Stock. Finished a surprising 12th at WX '03. Some thought his season-ending injury in March '03 might also end his career, but he came back quickly.