Leon Clarance, from Somerset in the United Kingdom, is a film producer and actor best known for Sense8 (2015), Blake's 7 and Kodachrome (2017). He was also involved in the financing of Pirates of the Caribbean 3, The Bourne Ultimatum and small, charming indie files like The Boy Downstairs and Steel Country.

When it comes to endurance sports, Leon says: 'I take a lot of time to finish races but not very long to finish dinner.' He joined the 4 Deserts Club as a Grand Slammer at The Last Desert (Antarctica) 2018!

Bart Van Schilt is from Belgium but lives in the Netherlands. He completed the Marathon des Sables in 2015 but says "now I want something really tough". 

At The Last Desert (Antarctica) 2018 Bart's fourth RacingThePlanet / 4 Deserts Race, he joined the Grand Slam Club!

Poland's Marek Rybiec is the founder and CEO of iWealth Management. Marek joined the Grand Slam club at The Last Desert (Antarctica) 2018!

He has successfully completed he Atacama Crossing (Chile), the Sahara Race (Namibia) and the Gobi March (Mongolia) earlier this year. He has also completed RacingThePlanet: Patagonia 2017.

Through his 2018 challenge he is supporting the charity Double Challenge Fund.

Korean competitor Choi Hongseok is no stranger to RacingThePlanet / 4 Deserts Ultramarathons. He has completed six races and finished 2018 with a Grand Slam at The Last Desert (Antarctica) 2018.

When he is not running through deserts he works in business administration at One&One in Seoul, South Korea.

Takuya Wakaoka, a freelance writer from Japan, is no stranger to RacingThePlanet / 4 Deserts Ultramarathons but his improvement in speed and placing is impressive. Taku's first 4 Deserts race was the Atacama Crossing in 2015 where he finished a respectable 27th. He then surprised us all by finishing 4th at the Sahara Race (Namibia) 2016.

In 2018, he completed the 4 Deserts Grand Slam at The Last Desert (Antarctica) where he finished third overall. .

South Korean University student Cheongsin Heogwak is studying in Seoul. He completed the Grand Slam in 2018 when he crossed the finish line at The Last Desert (Antarctica) 2018.

In 2018, 23-year old Jacqueline Bell from Brisbane, Australia, is the youngest female to ever complete the 4 Deserts Grand Slam.

Her love for running began when she placed 3rd in her first Ultra Marathon in 2015, a 50km loop around the Gold Coast. She has also competed in a number of other running events over the past three years such as trail runs, half marathons, marathons, and three Oxfam 100km trail runs.

Jacqui has always liked to push the boundaries, she has stated that "Running brings purpose and meaning in my life, I love it. It makes me want to jump out of bed every morning and be the best version of myself." By achieving a strong mental base, she is a firm believer that any physical challenge put in front of you can be overcome. This philosophy has become especially apparent with her running feats.

Originally from France, Hichame has been living in Qatar since 2008. As an Ultra Endurance Athlete, training and competing is an integral part of his lifestyle and is a passion, he is an accomplished vegan athlete and full-time wellness & plant-based nutrition advocate.

He has participated in several ultra trail runs (mainly 50km and 100km distances) and IronMan/UltraMan Triathlons. Joining the 4 Deserts Club as a Grand Slammer was part of his plan to run across the four most inhospitable deserts in the world; the hottest, windiest, driest and coldest. The idea came from asking himself "how can I make each of my steps, each kilometer count towards helping others?". He aims to demonstrate how somebody ordinary can make an extraordinary positive impact on the wider community.

Through this 2018 Grand Slam feat completed he has raised enough funds to help 804 people to get access to clean water, Project with Water wells has been developed.

William Chew's family has been selling cakes and snacks to Hong Kong people for more than 50 years but the company CEO has managed to stay away from the mango sago in his preparation for the 4 Deserts Grand Slam!

Malaysian-born William has a number of marathons under his belt including Kuala Lumpur in his home country.

At The Last Desert (Antarctica) 2018, William's fourth RacingThePlanet / 4 Deserts Ultramarathon, he was the the first person from Malaysia to join the 4 Deserts Club and Grand Slam!