The route and distance
The main Arbaeen walk covers roughly 80 kilometers (about 50 miles) between Najaf and Karbala, and most pilgrims complete it over two to four days depending on pace and rest stops. The walk culminates in Arbaeen, the fortieth day after Ashura, when the shrine of Imam Hussain (A.S.) in Karbala receives what is widely described as the largest annual gathering of people anywhere in the world.