I still run outside occasionally and enjoy it; there are some good routes around here. You can join a Colombian running group if you like or chat with runners on Bolivar's faculty and find a partner. But if you're planning to live here for a couple of years, this might be worth your money for those rainy days. If you're a walker, this is a great option too.

I consistently put forty to fifty miles a week on the treadmill and think that it's a good piece of equipment. Reviews of the Crosswalk suggest that it isn't up to an intense run but I frequently do ten or eleven mile runs on it (8 - 8:20 minute/mile) and have been happy with the speed work I get done too. I have never maxed out the speed and don't plan to since a six minute mile sounds terrifying right now.
I paid almost three times what this treadmill sells for in the States. I am not looking to recoup that but if you're thinking about buying a treadmill, please consider mine. It's in good condition and to buy new elsewhere is costly. $500