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Hi Ritika, You can go by booking a cab or by local buses.
I recommend train journey : find below details There is/are 4 direct train(s) from Chennai to Puducherry. These train(s) is/are Bbs Pdy Express (12898), Ndls Pdy Exp (22404), Karaikal Exp (16175) and Ltt Karaikal Exp (11017) etc. The minimum time a train takes to reach Puducherry from Chennai is 4h 00m
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