Pachuca, formally known as Pachuca de Soto, is the capital and largest city of the Mexican state of Hidalgo. It is located in the south-central part of the state. Pachuca de Soto is also the name of the municipality of which the city serves as municipal seat. Pachuca is located about 90 km from Mexico City via Mexican Federal Highway 85. There is no consensus about the origin of the name Pachuca. It has been traced to the word pachoa (strait; opening), Pachoacan (place of government; place of silver and gold), and patlachuican (place of factories; place of tears).