The calculated distance (air line) between Aigle and La Chaux-de-Fonds is approximately 54 miles respectively 88 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 Aigle and La Chaux-de-Fonds has been calculated here.
Air line (approximately)
88 kilometers
47 nautical miles