Each year millions of Muslims make the annual pilgrimage to the Saudi city of Mecca.
The Hajj, as it is known, is still far away, at the end of October, but 47-year-old Senad Hadzic has already set off in that direction.
That's because he is on foot.
He started from his hometown in northern Bosnia back in December 2011 and is walking all the way to Mecca — a distance of 3,600 miles. He covers between 12 to 20 miles a day.