Bhag Milkha Bhag is based on the life of Milkha Singh, a renowned Indian athlete who rose to fame during the 1960s. Born in 1935 in Govindpura, a small village in Punjab, Milkha Singh's early life was marked by poverty and hardship. The partition of India in 1947 had a profound impact on his family, and he lost his parents at a young age. Despite these challenges, Milkha Singh discovered his passion for athletics and went on to become one of India's most celebrated athletes.