India, Nov. 12 -- Canadian ultrarunner Stephanie Case has achieved a remarkable feat in one of the world's harshest environments. The 43-year-old has become the first woman to complete a 100-mile race in Antarctica, finishing second overall in the Antarctic Ice Ultra. She braved temperatures as low as -35degC and strong winds to complete the gruelling challenge, with her achievement marking a milestone for women in ultrarunning.

The Antarctic Ice Ultra involved running 38 loops of a 4.2-km course in the Schirmacher Oasis in Queen Maud Land, East Antarctica. Case completed the distance in 17 hours, 31 minutes and 39 seconds, finishing just 29 minutes behind Chinese runner Yusheng Ni, who won the race.

Temperatures dropped to as low as -3...