The Great Tibetan Marathon is unusual in that it happens in an elevation of 3,500 meters in spiritual Buddhist surroundings.
The high elevation makes the oxygen level extremely low and the marathon equally more physically challenging.
But the position in the Himalayan mountains also gives an unparalleled dimension of beauty to the marathon.
As part of the race schedule, the organizers also include a trial run and a trek in the 2 days prior to race day to ensure runners get a sense of the task at hand.
The medical team also checks the runners after the trial runs to see whether their bodies have acclimatized to the conditions.