The calculated distance (air line) between Saint-Rémy-de-Provence and Montpellier is approximately 49 miles respectively 79 kilometers.
By car or train, the actual journey to Montpellier is certainly longer, as only the direct route (as the crow flies) between Saint-Rémy-de-Provence and Montpellier has been calculated here.
Air line (approximately)
79 kilometers
43 nautical miles