Hara was born in Nasushiobara on October 19, 1958. After graduating from Waseda University, he joined Japan Soccer League club Mitsubishi Motors (later "Urawa Reds") in 1981. The club won 1981 JSL Cup and 1982 Japan Soccer League. He played as a regular player from first season and played in all matches in the league until 1987/88 season. After that, club performance was not good and also played in Division 2. He retired in 1992. He played 192 games and scored 65 goals in the league.