The calculated distance (air line) between Tuyên Quang and Việt Trì is approximately 37 miles respectively 59 kilometers.
By car or train, the actual journey to Việt Trì is certainly longer, as only the direct route (as the crow flies) between Tuyên Quang and Việt Trì has been calculated here.
Air line (approximately)
59 kilometers
32 nautical miles