The calculated distance (air line) between Chêne-Bougeries and La Chaux-de-Fonds is approximately 69 miles respectively 111 kilometers.
By car or train, the actual journey to La Chaux-de-Fonds is certainly longer, as only the direct route (as the crow flies) between Chêne-Bougeries and La Chaux-de-Fonds has been calculated here.
Air line (approximately)
111 kilometers
60 nautical miles