More jagged than geometric , the four - and six-lane quadrilateral 's 3,625 miles run through 13 states and India 's four largest cities : New Delhi , Calcutta , Chennai , formerly Madras , and Mumbai , formerly Bombay .
India
New Delhi
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India
Chennai
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India
New Delhi
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India
Mumbai
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India
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New Delhi
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Calcutta
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Chennai
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Madras
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Mumbai
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Bombay