Paula Radcliffe has decided not to race in the marathon at the World Championships in Berlin after testing her fitness in her first race for 10 months last weekend.

Radcliffe blazed to victory in the New York City half-marathon with a world-class performance after a long absence recovering from a foot operation.

She was delighted with her display but the world record holder believes she is still about three weeks away from the condition required to win the gold medal.