Answer
3:59.4 was the time recorded when Roger Bannister broke the 4-minute barrier in the mile run on May 6, 1954, at the Iffley Road Track in Oxford, England. This historic achievement shattered the long-standing belief that running a mile in under 4 minutes was physiologically impossible. Bannister's record-breaking run not only pushed the boundaries of human athleticism but also inspired countless individuals to strive for greatness in their own endeavors.