The calculated distance (air line) between Kham Sakae Saeng and Bang Kruai is approximately 155 miles respectively 250 kilometers.
By car or train, the actual journey to Bang Kruai is certainly longer, as only the direct route (as the crow flies) between Kham Sakae Saeng and Bang Kruai has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles