In 2000, Croatian mountaineer Stipe Božić completed the Seven Summits. In May 2002, Susan Ershler and her husband, Phil, became the first married couple to climb the Seven Summits together. The first person to complete Seven Summits without the use of supplemental oxygen on Mount Everest is Reinhold Messner. Miroslav Caban is probably the second climber to finish the project without supplemental oxygen on Everest (finished in 2005 with Carstensz). Ed Viesturs also summitted all peaks without supplemental oxygen. Between 2002 and 2007, Austrian climber Christian Stangl completed the Seven Summits (Messner list), climbing alone and without supplemental oxygen, and reported a record total ascent time from respective base camp to summit of 58 hours and 45 minutes.