Britain's Mohammed "Mo" Farah smashed the European record in winning the 10,000m at the Prefontaine Classic Diamond League meeting on Friday with a time of 26min 46.57sec.
Farah, who is enjoying a strong season after moving to Portland, Oregon, to train with former distance great Alberto Salazar, sliced more than five seconds off the previous European record of 26:52.30, set by Belgian Mohammed Mourhit in 1999.
Farah said it was all geared toward the World Championships in South Korea, August 27-September 4.
"I want a world medal, and it has shown here," said the 28-year-old, who stormed home to finish comfortably in front of Ethiopian Imane Merga. "If I keep working hard, I'll be in the mix."
Merga clocked a personal best of 26:48.35 and Kenyan Josphat Bett was third in 26:48.99.
The race was part of the Distance Night festivities on the eve of the main Prefontaine Classic meeting, which is the fourth stop in the prestigious Diamond League series.
Although the crowd was small, it was enthusiastic, and roared as Farah stormed home.