She most recently crossed the finish line of the freezing Baikal Ice Marathon in March 2016 .
The Antarctic Ice Marathon will be Joanna 's fifth marathon , having made her marathon debut at the Berlin Marathon in 2014 .
Joanna most recently crossed the finish line of the freezing Baikal Ice Marathon in March 2016 .
The Antarctic Ice Marathon will be Joanna 's fifth marathon , having made her marathon debut at the Berlin Marathon in 2014 .