The calculated distance (air line) between Pekanbaru and Sungai Udang is approximately 130 miles respectively 210 kilometers.
By car or train, the actual journey to Sungai Udang is certainly longer, as only the direct route (as the crow flies) between Pekanbaru and Sungai Udang has been calculated here.
Air line (approximately)
210 kilometers
113 nautical miles