Marius - also known as "Miler Marius" runs a lot of 100 milers. He completed the Amuk Challenge twice, with a 200miler in the second attempt and this year he'll be attempting Amuk again as well as a crazy challenge - he has named it it the "Keep on Challenge"
Marius' mission in his own words:
"To help grow trail running in South Africa, no matter your gender, race or background. Trail running is an amazing sport that allows us to connect with each other by forming a community and support structure. The benefits of being more active are countless, including increased fitness, better health and improved mental wellbeing."