43.0 kilometers. From Langfang to Gu 'an, according to Baidu map query, the distance between the two places is 43.0 kilometers, and it takes 57 minutes by car, passing through the Capital Ring Expressway and Xinzhong East Street, and passing through the 19 traffic light. Langfang is a prefecture-level city under the jurisdiction of Hebei Province, which is located in the east of central Hebei Province, with Beijing in the north, Tianjin in the east, Cangzhou in the south and Baoding in the west. Located in the core area of Beijing-Tianjin-Hebei urban agglomeration and the hinterland of Bohai Sea.