Competitor bio:

Kristina is an elite endurance runner who has represented Denmark on the national trail team and the long-distance mountain team. The 33-year-old is a former boxer who started her running career in 2008. She became a professional runner in 2016 after winning the 2015 Volcano Marathon and the Jungle Ultra, a 230km self-supported multi stage race in the Amazon Jungle. Kristina holds the world record for fastest climb on Kilimanjaro and just recently won the Desert Ultra 250km beating the course record by 10 hours. Her goal is to beat the fastest average time on the World Marathon Challenge. You can check out her Facebook page at https://www.facebook.com/kristinaextremerunning.