They have been relegated to Hiroshima Prefectural League three times, but they have also been promoted back as many times to play again in the actual 5th level of Japanese football.
They featured four times in the Emperor's Cup: first in 1996, then again in 2014, 2016 and mostly 2017, when SRC reached 2nd round.
In 2016, SRC Hiroshima also won Chugoku Soccer League for the first time.
In 2020, they played an alternative championship (CSL Championship) following the cancelation of the 2020 Japanese Regional Leagues, in which they were crowned with the title after beating Baleine Shimonoseki by the score of 2–0 in the final.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.