A long-standing member of the Belgrave Harriers athletics club in Wimbledon, he was remembered for a battling run in deep snow in the 1947 English National Cross Country Championship, in which the club secured second place.
The club's membership contains several of Britain's leading athletes, including Olympic silver medallist and World Champion Phillips Idowu, Goldie Sayers, Dwain Chambers and Chicago Marathon winner Paul Evans as well as GB & NI 110m Hurdler William Sharman.
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As of February 2013, they had the most successful record in the history of the British Athletics League, with 11 titles.
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Belgrave Harriers compete in track and field (in the National 1 Division of the British Athletics League), road running, racewalking and cross country, and have traditionally drawn their members from South London and Surrey, but in recent decades have attracted athletes from counties all over England, the Home Nations and overseas.
As an athlete, Sweeney was affiliated to DSD AC, Dublin and Belgrave Harriers, Wimbledon (in England).
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