Hasay was previously a member of the Nike Oregon Project and had been coached by Alberto Salazar prior to his ban for doping offenses. The announcement of the shuttering of the Oregon Project came days before she toed the line at the Chicago Marathon. Hasay ended up dropping out with a hamstring injury.

Hasay intends to live in her hometown of Arroyo Grande, Calif. She has spent much of her time there in the past year, even while being coached by Salazar from Portland, Ore.

Radcliffe is a former marathon world record holder from Great Britain. She ran 2:15:25 to win the 2003 London Marathon. That mark stood until this year's Chicago Marathon where Brigid Kosgei ran 2:14:04.

Radcliffe's husband, Gary Lough, coached her during her career. He now coaches Mo Farah, another former Salazar athlete.