McConnell is a four-time World Championship bronze medallist in the 4 x 400 metres relay; in 2005 and 2007, with the latter team setting the British record of 3:20.04, 2009 and 2011. Her individual honours include winning a 2002 Commonwealth silver at 400 metres, 2002 European Championship bronze at 400 metres, and 2006 Commonwealth bronze at 400 metres hurdles.