The 12509 / 12510 Kaziranga Superfast Express is a Superfast express train operated by Northeast Frontier Railway zone that runs between Guwahati the capital city of Assam and Bangalore the capital of Karnataka in India.

It runs thrice in a week and passes through important states such as Assam, West Bengal, Bihar, Odisha, Andhra Pradesh, Tamil Nadu and Karnataka.

The 12510/Guwahati–Sir M. Visvesvaraya Terminal Superfast Express has an average speed of 56 km/h and covers 2973 km in 52h 30m.

The train departs from Platform #7 of Guwahati at 6:20 IST, every Sun, Mon and Tue and arrives at Platform #1 of Sir M. Visvesvaraya Terminal at 11:40 IST, every Tue, Wed and Thu.

Sometimes one or two High Capacity Parcel Vans are attached with it: As is customary with most other train services in India, coach composition may be amended at the discretion of Indian Railways, depending on demand.