競輪（中國大陸跟日文音譯凱琳）係種起源自日本嘅場地單車比賽項目。參賽單車先由電單車帶著慢慢行幾個圈（約莫1300-1400米），之後電單車會離開，參賽單車要鬥快踩埋最後兩三個圈（600-700米）去終點。
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