 She later competed on the highest level in 3000 metres indoors.She finished fifth at the 1987 European Indoor Championships, was disqualified in the final round at the 1991 World Indoor Championships, finished fourth at the 1993 World Indoor Championships, sixth at the 1992 European Indoor Championships, and fourth at the 1994 European Indoor Championships.She later started, but did not finish, the 1997 World Half Marathon Championships

Mai became German indoor champion in the 3000 metres in 1993 and 1994.