How can I get distance between two place of Bangladesh

How can I get exact distance and travel distance between two place of Bangladesh? Here is a web application, you can use it for finding distance between zila to zila or city to city or one place to another place in Bangladesh. See the straight line distance and traveling road distance among Barguna Barisal Bhola Jhalokathi Patuakhali Pirojpur Bandarban Brammonbaria Chandpur Chittagong Comilla Cox's Bazar Feni Khagrachhari Laksmipur Noakhali Rangamati Dhaka Faridpur Ghazipur Gopalganj Jamalpur Kishoreganj Madaripur Manikganj Munshiganj Mymensingh Narayanganj Norshingdi Netrokona Rajbari Shariatpur Sherpur Tangail Bagerhat Chuadanga Jessore Jhenaidah Khulna Kushtia Magura Meherpur Narail Satkhira Bogra Dinajpur Gaibandha Jaipurhat Kurigram Lalmonirhat Naogaon Natore Nawabganj Nilphamari Pabna Panchagarh Rajshahi Rangpur Sirajganj Thakurgaon Habiganj Moulvibazar Sunamganj Sylhet.