Carl Marinus Jensen deltog som dansk repræsentant ved de [[olympiske sommerlege]] i [[Sommer-OL 1908|1908]] (Men's Light-Heavyweight, Greco-Roman<ref>Sports-reference Carl Marinus [https://web.archive.org/web/20200417124114/https://www.sports-reference.com/olympics/athletes/je/carl-jensen-2.html Jensen]</ref>) og vandt bronze i letsværvægtsklassen i en alder af 25 år<ref name=":2" /><ref name=":5">Official Report - The fourth Olympiad being the officiel report of the Olympic games of 1908 celebrated in London (s 337)[https://library.olympic.org/Default/doc/SYRACUSE/28911/the-fourth-olympiad-being-the-official-report-of-the-olympic-games-of-1908-celebrated-in-london-draw?_lg=en-GB]</ref>. (Den ene ud af kun fem medaljer samlet for Danmark<ref name=":1" />). Vægtklassen var op til 93 kg, skønt Jensen kun vejede 85 kg<ref name=":5" /><ref name=":6">Sport - Olympic - 1908 London Summer Olympics[https://www.sport-olympic.gr/sp/index.php/olympic-games/modern-olympic-games/summer-olympic-games/1908-london-summer-olympics/1540-1908-summer-olympics-the-results-wrestling]</ref><ref name=":3" />. Brydningskampene fandt sted i [[Earl's Court Exhibition Center|Empress Hall]], London i perioden 21-24 juli 1908.<ref name=":0" /><ref name=":6" />
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