Long distance runner, Mina Guli, is trying to run more than 1,000 miles (1600km) through seven deserts on seven continents in seven weeks to raise awareness of worldwide water shortages.
She has completed six of the runs, having jogged an average of 150 miles (240km) each through harsh conditions in Spain, Jordan, Antarctica, Australia, South Africa and Chile.
She is currently in California to run her final leg through Death Valley.
She hopes to finish Tuesday, which the United Nations has designated World Water Day.
If she does, she will have run the equivalent of 40 marathons.