The calculated distance (air line) between Petaẖ Tiqva and Ashkelon is approximately 34 miles respectively 55 kilometers.
By car or train, the actual journey to Ashkelon is certainly longer, as only the direct route (as the crow flies) between Petaẖ Tiqva and Ashkelon has been calculated here.
Air line (approximately)
55 kilometers
30 nautical miles