The calculated distance (air line) between Ambérieu-en-Bugey and Nîmes is approximately 155 miles respectively 249 kilometers.
By car or train, the actual journey to Nîmes is certainly longer, as only the direct route (as the crow flies) between Ambérieu-en-Bugey and Nîmes has been calculated here.
Air line (approximately)
249 kilometers
134 nautical miles