The calculated distance (air line) between Ḩamāh and As-Suwayda is approximately 168 miles respectively 270 kilometers.
By car or train, the actual journey to As-Suwayda is certainly longer, as only the direct route (as the crow flies) between Ḩamāh and As-Suwayda has been calculated here.
Air line (approximately)
270 kilometers
146 nautical miles