Great Britain's Paula Radcliffe has set her sights on winning Olympic gold during the marathon in London next year.
First, the 37-year-old must qualify for the event and she is competing in tomorrow's Berlin race in an attempt to reach the required time.
"This will probably be my last Olympics and I want to win a gold," Radcliffe told BBC Sport.
"The best preparation would be for the Berlin marathon to be the only one."
Radcliffe will be racing her first marathon for the first time on Sunday since she gave birth in 2009.