During the historic Dandi March in 1930, Mahatma Gandhi walked approximately 385 kilometers (about 241 miles). He traveled from Sabarmati Ashram in Ahmedabad to the coastal village of Dandi over a period of 24 days. This symbolic journey was designed to mobilize the masses against the British salt monopoly and marked the launch of the Civil Disobedience Movement. ANSWER: (D) 385 km