The Darien gap might be an issue there.
Then it gets to the Amazonas river. It's so wide, some Portuguese navigator tought it was a fresh water Sea. There's only one bridge conencting the city os Manaus in the north bank to south and sone ferries scattered all over.
Then you have to cross half the Amazon jungle to get to a port in Colombia (Venezuela is not an option for obvious reasons).
Tl;dr, the Darian Gap is the least of your problems if you want to move coffee by land from here to the US.
I'm genuinely surprised at how impassible this all seems. especially the Andes.
Shipping freight by road to the Pacific means going through Argentina and Chile. I don't think Peru and Bolivia have the maintained roads to do it.
As far as I know, there are only four paved mountain passes between Argentina and Chile. Paso Paso de Jama is probably the most practical, and I think the one carrying the most freight currently.
The other three-- Cardenal Antonio Samoré, Paso Libertadores, and Pino Hachado-- are much farther south.
None of these routes would be cost effective for the international coffee trade at any scale. Take a look at some photos of Paso Libertadores to see what I mean.