I thought you were going to ride through La Chiquitania to Santa Cruz?
I was looking forward to reading about that!
I rode the Paraguay Chaco route in 2008. I went the other direction,
from Villamontes (Bolivia) to Conception (Paraguay) to Ponta Pora
(Brazil). In Paraguay, that route is all paved, and the western part
(west of Concepcion) is very flat and easy. In Bolivia, the road (from
Villamontes to Ibibobo to the border) was not paved when I was there,
but they were just starting to pave it, and I heard that it is paved
now. But in 2010, I received this info in an e-mail from Eric of
http://worldbiking.info:
"The road from Villamontes to the border is a sad story:
actually all paved to Paraguay but for the last two thirds of the
section(the
one that was not paved when you passed) they put up huge blockades of
dirt and trees
(impassable even by bicycle) every kilometer or so. So we wasted a lot
of time
to go around those: very frustrating ! As often in this part of world
the
pavement was done cheaply and started to break shortly after the road
was opened.
They have to do it almost all over again. In the meantime they want to
prevent
anyone driving on it."
I have not heard of any cyclists riding this route since 2010.
Anyway, there is never more than 150km between small communities where
you can get water and food. It is very dry (and very hot) in western
Paraguay. There are no creeks, only a few small ponds and reservoirs,
created for the cows, so your filter will not be very useful. You can
read my journal for more details.
http://jk.crazyguyonabike.com
(scroll down to July 2008). Jeff