The calculated distance (air line) between Toyoshina and Higashi-ōsaka is approximately 172 miles respectively 278 kilometers.
By car or train, the actual journey to Higashi-ōsaka is certainly longer, as only the direct route (as the crow flies) between Toyoshina and Higashi-ōsaka has been calculated here.
Air line (approximately)
278 kilometers
150 nautical miles