I have really enjoyed the Adelaide to Darwin KMs challenge...a great motivator to get my bottom out of bed in the morning. My only gripe is that when I try to imagine where I'm supposed to be walking it's too damned hot.
In case I miss the end of the current challenge (one of you cyclists will finish it off while I'm not looking I'm sure
) I thought I'd put in a vote for where we could go for our next challenge...and I was thinking about somewhere lovely and cool with zero humidity
How about we walk from Mawson Station in Antarctica to McMurdo Station in Antarctica? It'll be cool (ok COLD) but dry (Antarctica is considered a desert as there is no rain). This map shows both stations (Mawson is on the right near the top, McMurdo is on the bottom in the middle) http://www.antarcticconnection.com/antarctic/stations/index.shtml
This site has great info about Antarctica http://www.coolantarctica.com/index.html
It was hard to find an exact distance between the two stations (or between any other two points down there) due to the pesky mountains and icebergs but the around 4200kms seemed to be about right (I will do some more research before we set off on our journey if we decide to go for this route)