Pro runner’s next-level workout on the road to L.A. Olympic medal

Parker Valby fits in seamlessly with her new training family, New Balance Boston, at their Wednesday workout

Teenage sprint phenom lowers his U18 world record again

16-year-old American sprinter Quincy Wilson ran a jaw-dropping 44.20 seconds, taking nearly half a second off his previous record

American track star Parker Valby wins NCAA 10,000m title in controversial shoes

Valby wore customized Nike Vaporfly Next% 3 track spikes, which are 40 mm high