Glasner started with SV Riedau, then went on to SV Ried. There he played from 1992 until 2011. In the 2003/04 season, he played for LASK Linz on loan. For SV Ried he played 516 matches and scored 27 goals. He played for Ried in an international match in 2011. He then had to have surgery on his brain, which ended his career.