10,000 meter runner Mo Farah pumps up the crowd as he finishes first in the race. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)

American Maggie Vessey finishes first in style. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29 – 30 2015. (Cole Elsasser/Emerald)

Aussie Selma Kajan and American McKayla Fricker prepare to be the pack leaders for the sunset 800m. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29 – 30 2015. (Cole Elsasser/Emerald)

10,000 meter runner Mo Farah and 5,000 meter runner Galen Rupp embrace prior to Farah’s race. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)

Sanya Richards-Ross tells the story of her first trip to Hayward as a highschooler in 2002 The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29 – 30 2015. (Cole Elsasser/Emerald)

5,000 meter runner Galen Rupp sits back while watching the 10,000 meter race. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)

10,000 meter race winner Mo Farah takes a selfie with fans after the race. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)

Mo Farah’s daughter runs around with her father’s shoes while Mo signs autographs. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)

Known for her fashion forward track styles, American Maggie Vessey is unimpressed with her 2 minute finish in the 800m.The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29 – 30 2015. (Cole Elsasser/Emerald)

American LaTavia Thomas is all business as she prepares for the 800m. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29 – 30 2015. (Cole Elsasser/Emerald)

Long jumper Brittney Reese hurls herself into the sand during her second attempt. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)

Long jumper Lorraine Ugen warms up on the track prior to the start of her event. The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)

The 41st annual Prefontaine Classic welcomes world-class athletes to compete at Hayward Field in Eugene, Ore., on May 29-30 2015. (Taylor Wilder/Emerald)