LAHTI, Finland — 1, 2, 3, 4: Norway’s Marit Bjørgen, Norway’s Heidi Weng, Norway’s Astrid Uhrenholdt Jacobsen, Norway’s Ragnhild Haga. That’s how the women’s 30-kilometer freestyle mass start at the 2017 Nordic World Championships ended on Saturday. Bjørgen has two previous 30-kilometer championship titles, but Saturday’s was her first in freestyle. She won the race in 1:08:36.8 hours, just 1.9 seconds ahead of a hard-charging, photo-finishing Weng for second and Jacobsen for third. Haga finished...