The bus to Sao Paolo from Curitiba was pretty long - a 6 hour bus trip extended to 8 hours because of a blown-out tyre. They take it out of you, but I'm sure they're going to get a lot longer. I can't say the 15-24 bus journeys in the south of Argentina and Chile look too appealing.
We arrived at Sao Paolo yesterday and got a taxi to the other side of the city, where we met up with an old friend of mine from uni - Stef. By the time we got there it was 8pm and we hadn't eaten all day. So it was food, quick catch-up and then bed before a 5am start and heading to the airport and back to Buenos Aires.
Being in Buenos Aires feels like being back in Europe. I think we are appreciating it much more having travelled around a bit (although we still have 16 weeks to go!) It's nice to be able to understand a bit more of the language (we didn't really make much effort with the Portuguese in Brazil - I'm attempting to cram Spanish as much as possible instead).
We had a great time in Brazil - Ilha do Mel was nice, as was Morretes. But, it looks like we're going to try and change our flights and head back home from Bogota, Colombia rather than fly back to Rio. This'll mean that once we're in Patagonia we'll be heading north until we hit the Caribbean rather than trying to do a circle and cover a unmanageable distance. It just seems to make sense that way.
We'll see.
(View of our hostel in Morretes, Parana surrounded by the Atlantic rainforest)