In Indian is Bombay more than 500 miles northwest of madras?

No, Bombay (now known as Mumbai) is not more than 500 miles northwest of Madras (now called Chennai). The distance between Mumbai and Chennai is approximately 780 miles (1,250 kilometers) when measured in a straight line. Therefore, Bombay is actually located to the northwest of Madras, but not within the specified distance of 500 miles.