McMurdo Station
The first marathon held in Antarctica may have been near the American research base, McMurdo Station, in January 1995. The annual marathon is free and is open to employees and grantees of the United States Antarctic Program, United States Air Force personnel on duty at McMurdo Station, as well as Kiwis from New Zealand's nearby research station, Scott Base. Many participants run the full marathon. However, a half marathon option is available. Some participants elect to ski the course. In January 2015, McMurdo Station hosted possibly the first known Ultra Marathon over 30 miles on the continent.