The calculated distance (air line) between Dhamār and Bayt al Faqīh is approximately 72 miles respectively 116 kilometers.
By car or train, the actual journey to Bayt al Faqīh is certainly longer, as only the direct route (as the crow flies) between Dhamār and Bayt al Faqīh has been calculated here.
Air line (approximately)
116 kilometers
63 nautical miles