The calculated distance (air line) between Butterfly and Tiu Keng Leng is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Tiu Keng Leng is certainly longer, as only the direct route (as the crow flies) between Butterfly and Tiu Keng Leng has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles