In adventure racing, just finding the finish line is part of the challenge.

To finish the course, teams will have to find their way across miles of glaciers and tundra and down icy rivers.

One mistake can take the team miles off course. And getting lost is not an option. There are no towns or villages along the course for refuge or directions.

There is only one road through part of the course, and helicopter access is limited. Being rescued is more of a challenge than finishing the race.