 Since 2010, this segment has been held biannually in order to minimise its environmental impact, and usually takes place around the end of November.The unique challenges of The Last Desert (Antarctica) include having to cope with the severity of the weather conditions that can include gale force blizzards and temperatures down to −20 °C (-4 °F).Competitors also have to deal with the unpredictability of daily stage lengths and start-times, as the prevailing environmental conditions dictate where and when stages might begin.