Yatra is an essential part of the ritual of the Hindu system of worship. Yatra literally means travel or journey. Normally, it is the representative deities of temples more popularly known as Utsava Murti in south and Chalanti Pratima or Bije Pratima in Orissa, partake in these journeys.
Rath Yatra being unique among all Jatras is the grandest festival of the supreme divinity who has manifested himself in the Kali Yuga to emancipate humanity and to relieve them from their sufferings. Lord Jagannatha is identified fully with Vishnu and Krishna. In his original manifestation as Nilamadhaba, he was worshipped in a sacred Nyagrodha Briksha or banyan tree.
A glimpse of Lord Jagannatha on the chariot is considered to be very auspicious and saints, poets and scriptures have repeatedly glorified the sanctity of this special festival.
The sanctity of the festival is such that even a touch of the chariot or even the ropes with which these are pulled is considered enough to confer the results of several pious deeds or penance for ages. In fact, there is a famous Oriya song which says that on this occasion, the chariot, the wheels, the grand avenue all become one with Lord Jagannatha himself.