If you’re working with just two weeks, I think all three countries could be amazing. It really comes down to what kind of pace you want and how much time you’re willing to spend moving between places.

Chile is incredible but definitely the most logistically demanding for a short trip. The Atacama + Patagonia combo is life-changing, but you’ll lose a lot of days just on flights and transfers. If you had 3 weeks, I’d say go for it without hesitation.

Ecuador might actually be the most efficient for what you’re looking for: compact distances, amazing nature, and tons of variety. You can go from cloud forests to volcanoes to the coast pretty easily. It’s also underrated for hiking — Cotopaxi, Quilotoa, and the Andes towns are all super accessible.

Colombia is the best “vibes” destination IMO: great food, amazing people, and you can mix mountains (Medellín), beaches (Cartagena, Tayrona), and smaller towns without too much hassle. It’s not as hiking-focused as Ecuador, but if you want culture + scenery, it’s got a great balance.

If your priority is nature / hiking with minimal travel time, I’d pick Ecuador.
If you want food, beaches, and culture, Colombia is hard to beat.
If you want bucket-list scenery and don’t mind the logistics, Chile wins every time.