How many miles would a trader beginning in novgorod and traveling to constanople have to go via the dnieper river and the black sea?

A trader traveling from Novgorod to Constantinople via the Dnieper River and the Black Sea would cover approximately 1,400 to 1,600 miles. This route includes navigating the Dnieper River and then crossing the Black Sea to reach Constantinople. The exact distance can vary based on the specific path taken along the river and the sea.