The calculated distance (air line) between Heppenheim an der Bergstrasse and Essen is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to Essen is certainly longer, as only the direct route (as the crow flies) between Heppenheim an der Bergstrasse and Essen has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles