Gromov's father, Mikhail Konstantinovich Gromov, was of noble intelligentsia and served as military medic. His mother, Lyubov Ignatyevna Andreeva, was from peasant family, had obstetrician training. Gromov spent his childhood in Kaluga, Rzhev, Myza-Raevo. He graduated from Voskresensky Real School in Moscow, he studied in IMTS from 1916 to 1917. In 1917, Gromov graduated from aviation theoretical courses at IMTS and started his army service.
Career
Upon graduation from the Moscow Central Aviation School in 1918, Gromov served as a flight instructor and military pilot. In 1923, he won the Soviet championship in weightlifting. In 1925, he started working as a test pilot testing the aeroplanes designed by Andrei Tupolev and Nikolai Polikarpov in Air Force Research Institute. From 1930 to 1941, Gromov worked in the Central Aerohydrodynamic Institute and became chief-pilot. On 25 April 1927 made the first Soviet parachute jump out of a Polikarpov I-1 under testing that had entered an unrecoverable spin. From June to September 1925, Gromov flew the Polikarpov R-1 in the long-haul group flight of nine aeroplanes on the route Moscow-Beijing-Tokyo. On 30 August 1926, Gromov started and completed in three days a European promotional flight in a Tupolev ANT-3 on the route Moscow-Königsberg-Berlin-Paris-Rome-Vienna-Prague-Warsaw-Moscow. From 10 to 12 September 1934, Gromov, A. I. Filin, and I. T. Spirin in a Tupolev ANT-25 made a record closed-circle non-stop flight on the route Moscow-Ryazan-Kharkov, flying in 75 hours. He was awarded the title of Hero of the Soviet Union for this deed. From 12 to 14 July 1937, Gromov, A. B. Yumashev, and S. A. Danilin established a new non-stop flight distance record of from Moscow to San Jacinto, California, via the North Pole in a Tupolev ANT-25. Gromov used his influence and renown among the government to attain reconsideration of Sergei Korolev's case, which resulted in his transfer from prison camp at Kolyma to TsKB-29. From March to August 1941, Gromov was the first director of the Flight Research Institute, a flight research and testing centre in Zhukovsky. The name of M. M. Gromov was awarded to the institute in 1991 to celebrate 50th anniversary of the institute. During World War II, Gromov took command of several units: