The longest river in european russia is the which flows 2,193 miles from russia’s valdai hills to the caspian sea. a. ural river b. lena river c. volga river d. amur river e. dnieper river i say it's b. but someone else i know says it's c. even though in my geography book, it says the volga river is the fourth longest river in european russia. if you find the answer, can you give a reason with like proof or