Triathlon and road para-cycling After university, Whitmore competed in mountain bike races before settling on triathlon in the early 2000s. As a competitor for
XTERRA Triathlon, Whitmore was the world champion in 2004 and won over thirty races including consecutive United States championships from 2002 to 2007 excluding 2006. In 2008, Whitmore was diagnosed with
spindle cell sarcoma and became paralyzed in her leg due to
drop foot. After her paralysis ended her triathlon career, Whitmore returned to cycling in the 2010s. As a paracyclist, Whitmore began competing in championships held by the
Union Cycliste Internationale in 2013. At the
UCI Para-cycling Road World Championships, Whitmore won back to back gold medals at the time trial and road race events from 2013 to 2015. She later won bronze in both events during the 2018 event.
Track para-cycling Simultaneously, Whitmore started competing at the
UCI Para-cycling Track World Championships in 2014. At the 2014 event, Whitmore broke the world records in the time trial and pursuit events for the C3 classification while winning her first track gold medals in those events. The following year, Whitmore reclaimed her gold in time trial while adding a silver in pursuit and scratch race. She added a silver in scratch race and bronze in time trial at the 2016 track championship. Whitmore added a gold in time trial and scratch in 2017 with additional bronzes in time trial, pursuit and scratch in 2018. At the
2020 Summer Paralympics, Whitmore did not any medals in her events. ==Awards and honors==