Stephanie Case finished the Antarctic Ice Ultra in 17:31:39, setting a new women's record. She aimed for the overall record but finished second overall. Case's time would have beaten the previous record by over five hours.

The race, in Queen Maud Land, offers 24-hour daylight and extreme cold. It is one of the toughest races globally. This was the third edition, with records falling each year since 2024. Read more trail coverage.

Case, a former UN lawyer, founded Free to Run. She signed with The North Face in 2025 and trains in Chamonix. Her achievement follows Catherine Drysdale's win at the Antarctic Ice Marathon. Related: Ultrarunner Trains in Extreme Cold for Antarctic Race.

This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.