Kaur finished seventh in the 4 x 400 metres relay at the 2004 Summer Olympics, together with teammates Satti Geetha, K. M. Beenamol and Chitra K. Soman. This team, only with Manjeet Kaur running instead of Geetha, had set a national record of 3:26.89 minutes in the heat. Kaur also ran for the Indian team who won a silver medal at the 2006 Commonwealth Games. Her personal best time in 400 m is 51.57 seconds, achieved in June 2004 in Chennai.