Wijmeersch returned to form in 2005 at the age of 35, setting lifetime indoor bests of 6.69 seconds for the 60 m and 5.80 seconds for the 50 metres. He was the national champion indoors in the short sprint, but did not translate these performances to the outdoor season, in which his best outing was a third-place finish in the 100 m at the Belgian Championships. Better performances came in 2006. He was the over-35 category winner of the 60 m at the World Masters Athletics Indoor Championships and claimed a 100 m individual and relay double at the European Cup 1st League. He ran a season's best of 10.25 seconds for the 100 m – among the fastest times of his career, in spite of his age. He ran in that event at the 2006 European Athletics Championships and was a semi-finalist. It was to be the last major international outing of his career. Passing his mid-thirties, he ran at European Cup meetings for Belgium in 2007 and 2008 but did not medal. He brought his career to a close with a high by taking the 100 m title at the 2008 Belgian Championships.