The calculated distance (air line) between Roquebrune-sur-Argens and Toulon is approximately 42 miles respectively 67 kilometers.
By car or train, the actual journey to Toulon is certainly longer, as only the direct route (as the crow flies) between Roquebrune-sur-Argens and Toulon has been calculated here.
Air line (approximately)
67 kilometers
36 nautical miles