Buzz, count me in. Better late than never. I've only logged 16.2 km so far in 2012 so I'm a bit behind, but it was horribly hot/humid at the beginning of the year and so I exercised indoors instead. I don't walk as much over summer; I do a lot more walking over winter, as I prefer outdoor activity when it's cold. Still, I hope to eventually catch up with you guys by mid-year.
Wow, so many physical challenges I've signed up to this year: pull-ups, 100 push-ups, and now walking 1000 km!