The calculated distance (air line) between Béthune and Paris 20 Ménilmontant is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Paris 20 Ménilmontant is certainly longer, as only the direct route (as the crow flies) between Béthune and Paris 20 Ménilmontant has been calculated here.
Air line (approximately)
186 kilometers
100 nautical miles