1. Argentina 1999
Held in the extreme terrain of Patagonia, this proved to be the most competitive Eco-Challenge yet with the top finishing teams from past Eco-Challenge races competing together for the first time. Competitors navigated deep fjords in sea kayaks, paddled whitewater rivers in inflatable kayaks, and crossed the expansive windswept pampas on horseback. Teams also traversed the ridges of the Andes, the longest mountain chain on the planet and ascended a glacier to the summit of a 12,000 foot peak.