BOSTON -- In a meet that saw six world leads set, it was the women's distance medley relay that reigned supreme. Bettering the world record that was set two years ago at this meet, 2016 Olympians Emma Coburn (Crested Butte, Colorado), Sydney McLaughlin (Dunellen, New Jersey), Brenda Martinez (Rancho Cucamonga, California) and Jenny Simpson (Oviedo, Florida) teamed up to break the DMR world record at the New Balance Indoor Grand Prix in 10:40.31.
Coburn got things started for Team USA, handing off the baton to McLaughlin ahead of the team from Europe, with the Olympic bronze medalist splitting 3:18.