Circumambulating Earth 100,000 times

The Vishnu Purana mentions that one will get a great benefit from bathing during Kumbh Mela than performing Combinations of Below

1. 1,000 Sacrifices
2. Circumambulating the earth 100,000 times. 

Bonus

1. All sins committed by the person is washed away 
2. 88 generations of ancestors are liberated. 

Irrespective of the Persons Faith(All Religions)

Source
http://laxmivishnu.blogspot.com/