The calculated distance (air line) between Ipswich and Frinton-on-Sea is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Frinton-on-Sea is certainly longer, as only the direct route (as the crow flies) between Ipswich and Frinton-on-Sea has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles