The calculated distance (air line) between Murten/Morat and La Chaux-de-Fonds is approximately 18 miles respectively 29 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 Murten/Morat and La Chaux-de-Fonds has been calculated here.
Air line (approximately)
29 kilometers
16 nautical miles