Sonipat is a planned industrial city & administrative headquarter in Sonipat district of Haryana state of India. It comes under the National Capital …Sonipat is a planned industrial city & administrative headquarter in Sonipat district of Haryana state of India. It comes under the National Capital Region and is around 44 kilometres from New Delhi. It lies 214 km southwest of Chandigarh, the state capital. The Yamuna River runs along its eastern boundary. Sonipat was historically known as Sonprastha.