Pupils from London's West Ham Church Primary School have been joined by Paralympic and Olympic athletes to mark the unveiling of the 2012 stadium's new athletics track.

Paralympic discus gold medallist Dan Greaves; 1,500m athlete Hannah England; and British long jump record holder Chris Tomlinson all attended a special event on 3 October.

The track at the Olympic Stadium has been supplied by Mondo and was laid in August. It features a Sport FLEX system and is designed to assist athletes achieve faster times.

Hugh Robertson, minister for sport and the Olympics, said: "This is another piece in the jigsaw for our Olympic Stadium."

Meanwhile, a ballot for places in the National Lottery Olympic Park Run has now opened in order to give people a chance to take part in the Olympic Park's first public event.

A total of 5,000 people will be selected to participate in the 5-mile (8km) run across the park, which will conclude on the home straight inside the Olympic Stadium.

The closing date is 27 October. Details: www.nationallotteryrun.com

Image: LOCOG chair Sebastian Coe with 1,500m athlete Hannah England take to the new track - David Poultney/LOCOG