The calculated distance (air line) between Woodbine-Lumsden and Oshawa is approximately 27 miles respectively 44 kilometers.
By car or train, the actual journey to Oshawa is certainly longer, as only the direct route (as the crow flies) between Woodbine-Lumsden and Oshawa has been calculated here.
Air line (approximately)
44 kilometers
24 nautical miles