The toughest footrace on earth, named Marathon Des Sables or Marathon of Sand for those who don't speak French, is here.

Having begun Sunday, the grueling feat challenges over 1,000 participants to run 156 miles over the course of six days, carrying their water and essentials in their own backpacks.

Basically, it is running a marathon . Six days in a row. In the Saharan Desert. Battling temperatures of 50 degrees.

Despite being completely insane, many participants are running for causes, using this exhausting event as a way to raise money or awareness for charity. From Ghassan Hajjar from Lebanon to Sabbah Ammar from Jordan, there are a lot of Middle Eastern participants who are contributing to make the world a better place.

Frontrunner and British explorer, Sir Ranulph Fiennes, who is 71 years old, hopes to raise £2.5 million ($3.7 million) for the Marie Curie cancer charity.

While we will not be participating anytime soon, here are a few photos from the event as participants enter day four.

Make sure you get the gear. Laura is ready to conquer the desert.

So is this lady. Are those plastic bags on her feet?!

And just in case you didn't think it was important from the previous pictures, we are reiterating: come extra, extra prepared. Like all the protein bars-prepared.

Also: water. All the time.

Luckily, the view is pretty sweet.

Also, #MdS2015 is a great opportunity for some solid off-roading.

And a great time to channel your inner Lion King. Don't lie, we all wanted to hang out with Timon and Pumba.

And here's the finish line from yesterday. Only two more to go.

Good luck.