The calculated distance (air line) between Al Wafrah and Umm as Sāhik is approximately 183 miles respectively 295 kilometers.
By car or train, the actual journey to Umm as Sāhik is certainly longer, as only the direct route (as the crow flies) between Al Wafrah and Umm as Sāhik has been calculated here.
Air line (approximately)
295 kilometers
159 nautical miles