MIDWAY, Utah — With four grueling uphills per lap, the new U.S. Cross Country Championships women’s 10-kilometer nine years. Maybe flats are easier to find on Gregg’s Twin City turf than the hills that abound in SoHo. But the 36 year old still considers herself a climber. Gregg proved a point after she won by 2.2 seconds in the women’s 10 k freestyle on Saturday, the first day of nationals: put a hill, any hill, in front of her and...