This is a guest post courtesy of Todd. My wife and I had a goal to run a marathon on every continent, so it was inevitable that we would eventually have to run one in Antarctica. The trip sells out years in advance, so we had to secure our positions for the 2017 race in 2014.  Along with planning well ahead, we definitely had to consider some unique challenges, particularly when developing our packing list. In April, the weather in Antarctica is unpredictable and is known to