The calculated distance (air line) between Broek op Langedijk and Leeuwarden is approximately 55 miles respectively 89 kilometers.
By car or train, the actual journey to Leeuwarden is certainly longer, as only the direct route (as the crow flies) between Broek op Langedijk and Leeuwarden has been calculated here.
Air line (approximately)
89 kilometers
48 nautical miles