 The next decade saw the club moving between Bezirksoberliga and Bezirksliga, before regaining its Landesliga status in 2001, for two more seasons, before being relegated again.The club bounced right back however, winning its third promotion to the Landesliga in 2004.After a second place Landesliga result in 2007, Thannhausen advanced to the Bayernliga (IV) for the first time, winning the promotion round, becoming the 99th team to play in this league since 1963.