Thong Nong Cao Bang offers beautiful off the beaten path cycling holidays in north east Vietnam. Some of best Vietnam cycle tours are arranged around Thong Nong include Thong Nong bike adventures, Thong Nong cycling holidays, northeast Vietnam road cycling tours, biking northern Vietnam, and Thong Nong mountain biking trip. Thong Nong Cao Bang is a mountainous district of Cao Bang Province in the northeast region of Vietnam. The district covers an area of 360 km².