Jamie Whitmore Cardenas (born 4 May 1976) is a former American triathlete turned para-cyclist. Whitmore began her sports career competing in the XTERRA Triathlon throughout the 2000s. As a XTERRA triathlete, she won over thirty events and was the XTERRA world champion in 2004. After being diagnosed with spindle cell sarcoma in 2008, Whitmore moved to para-cycling in the 2010s and competed in championships held by the Union Cycliste Internationale. Since 2013, Whitmore has won twenty overall medals while competing at the UCI Para-cycling Road World Championships and UCI Para-cycling Track World Championships. After breaking the C3 world record in time trial and pursuit at the 2014 para-cycling track championships, Whitmore won gold in the road race and pursuit events at the 2016 Summer Para