The calculated distance (air line) between La Colle-sur-Loup and Montpellier is approximately 161 miles respectively 260 kilometers.
By car or train, the actual journey to Montpellier is certainly longer, as only the direct route (as the crow flies) between La Colle-sur-Loup and Montpellier has been calculated here.
Air line (approximately)
260 kilometers
140 nautical miles