Jo Pavey and Julia Bleasdale finished seventh and eighth respectively in the women's 5,000 metres final at the Olympic Stadium.
Ethiopia's Meseret Defar claimed gold as she denied her compatriot Tirunesh Dibaba the chance to add another title to the 10,000m crown she won a week ago, having taken gold in both athletics events in Beijing.
Instead Defar, who won 5,000m gold eight years ago in Athens, held off her challengers down the home straight to win in 15m 04.25s.
Kenya's Vivian Cheruiyot was second with Dibaba getting the bronze.
Sophie Hitchon finished 12th in the hammer final at the Olympic Stadium following an impressive qualifying throw.
The 21-year-old athlete, who broke her British record with a 71.98m throw in qualifying, could only manage a best of 69.33m on Friday.
It would have taken a huge personal best to make the top-eight cut.