LAHTI, Finland — Yesterday’s lick of blue sky winter sun was fleeting, as Lahti woke to overcast skies and buzz that new snow was imminent. Race time temps hovered around 24 degrees Fahrenheit, but with 78-percent humidity and a brisk wind — some would say ripping — blowing out of the west, it felt wind-brief cold. Wednesday’s kickoff events were an opportunity for volunteers, camera crews and even hundreds of local Finnish school children who...