Tell the name/no. of train which runs most distance on (4 metro cities connecting) sections.
Grand Chord Sections
1. Route of Howrah Rajdhani via Gaya
2. Route of Mumbai Rajdhani
3. Route of Madras Rajdhani...
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4. Route of Mmbai Howrah Duronto
5. Route of Coromandal Express.
AB btaaye aisi train ka naam jo chalti he sabse zada km (4 metro cities connecting) line pe aur paaye shandar inaam