The calculated distance (air line) between Dien Bien Phu and Việt Trì is approximately 153 miles respectively 246 kilometers.
By car or train, the actual journey to Việt Trì is certainly longer, as only the direct route (as the crow flies) between Dien Bien Phu and Việt Trì has been calculated here.
Air line (approximately)
246 kilometers
133 nautical miles