The calculated distance (air line) between Yatsuomachi-higashikumisaka and Saitama is approximately 148 miles respectively 238 kilometers.
By car or train, the actual journey to Saitama is certainly longer, as only the direct route (as the crow flies) between Yatsuomachi-higashikumisaka and Saitama has been calculated here.
Air line (approximately)
238 kilometers
128 nautical miles