Jill came out of BMX retirement in early 2007, ostensibly to supplement her mountain cross training. She won her first post-comeback race on her first attempt. Despite a serious knee injury, Kintner continued to pursue success in BMX riding. With the objective of being included in the US BMX team for the 2008 Olympics, Kintner switched to BMX riding full-time. On June 2, 2008, she won a spot on the team after coming in sixth at the Union Cycliste Internationale (UCI) World Championships held in Taiyuan, China, out of a field of 32 racers, making the top 16. Kintner relocated to San Diego, California, in order to train at the Olympic Training Center, and won the bronze medal in BMX racing at the 2008 Olympics on August 19. Kintner stated it was highly unlikely that she would return for the 2012 Olympics.
