Helen said of her tough challenge:
"One thousand miles down, one thousand miles to go. I know
I've got a lot of hard work still to do but at least I am
closer to the end than the beginning now.
"Every single day here is tough so all
I can do is take each one at a time and get through it. I
have been suffering with the heat, my shoulders are sore and
my legs are covered in mosquito bites but I'm battling on."
Helen set off on January 20 near Nauta in Peru,
and is aiming to finish 2,010 miles downstream at Almerim
in Brazil. She is paddling around 60 miles a day to reach
the target in just six weeks and has just one rest day a week.
The Amazon river is the lengthiest
waterway in the world at around 4,000 miles long.