The calculated distance (air line) between Ashby-de-la-Zouch and Nuneaton is approximately 15 miles respectively 25 kilometers.
By car or train, the actual journey to Nuneaton is certainly longer, as only the direct route (as the crow flies) between Ashby-de-la-Zouch and Nuneaton has been calculated here.
Air line (approximately)
25 kilometers
13 nautical miles