The calculated distance (air line) between Essen and Marburg an der Lahn is approximately 88 miles respectively 142 kilometers.
By car or train, the actual journey to Marburg an der Lahn is certainly longer, as only the direct route (as the crow flies) between Essen and Marburg an der Lahn has been calculated here.
Air line (approximately)
142 kilometers
77 nautical miles