The calculated distance (air line) between Umm Al Quwain City and Gerāsh is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Gerāsh is certainly longer, as only the direct route (as the crow flies) between Umm Al Quwain City and Gerāsh has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles