Generally running remains pretty simple.
When you're racing 160km under the toughest of conditions though, preparation of gear, nutrition and equipment is vital.
South African Ultra Trail runner Ryan Sandes will race the Leadville 100 Miler race on Saturday and knows just what he needs to keep him going and to make sure he stays as comfortable as is possible when running at over 3 000m above sea level.
Click to listen to Sandes speak about the challenges of high altitude.
When you're racing 160km under the toughest of conditions though, preparation of gear, nutrition and equipment is vital.
South African Ultra Trail runner Ryan Sandes will race the Leadville 100 Miler race on Saturday and knows just what he needs to keep him going and to make sure he stays as comfortable as is possible when running at over 3 000m above sea level.
Click to listen to Sandes speak about the challenges of high altitude.