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Rankings are set by average marathon time across all seven stages. There's nowhere to hide a bad day — every stage counts equally.

Finish a marathon, board a plane, cross an ocean, run again. Sleep happens at altitude or not at all.

Sub-freezing Antarctic ice on day one; 80–90°F humidity in Singapore, Cartagena, and Miami. The body has to handle all of it, tired.

Organized by Ice Cap Adventures, the race opens every edition at Wolf's Fang, Antarctica — a working runway at 71° south, and the only marathon most of the field will ever run on the continent.

Each edition charts its own route across the seven continents. The 2026 edition crosses five oceans and every climate band on Earth in seven days.

Every stage streams live, with full timing and medical support following the field around the world.