"The lawyer-turned-conservationist is nearing the end of a 1,687km (1,048 miles) journey designed to highlight the amount of water used in consumer goods.
Last year, Ms Guli, 46, finished an even longer odyssey spanning seven continents."
Some conservationist, never mind the water, what about all the polluting flying and RV miles.
Only her word she's doing it, another scammer?
We'll probably have to wait for the book to get the full story.
Nothing about who's funding this.
"Ultra-runner Mina Guli winced in pain in the middle of a cow paddock. Bandages wrapped around her beaten feet, she contemplated the "holes" where her toenails used to be.
She was back in her native Australia, but emotionally Ms Guli felt a long way from home.
Why am I doing this, she asked herself, of her attempt to complete 40 marathons in 40 days across six continents.
But Ms Guli resolved to work through the pain. She laced up her running shoes, pulled on her shorts and shirt, and "got the miles done".
"It wasn't a pretty day, there were lots of tears but I got through it," Ms Guli tells the BBC. "I don't run because I enjoy running, I run because I want to raise awareness about water issues."