By MARK THIESSEN
ANCHORAGE, Alaska (AP) — Brent Sass hadn’t seen another musher in nearly 400 miles, which is a good sign for the leader of the Iditarod Trail Sled Dog Race across Alaska. He arrived Monday in White Mountain, where mushers must take a mandatory eight-hour layover before making the final 77-mile push to Nome. Sass told a film crew for the Iditarod Insider that he is not allowing himself to think about the finish line yet, mainly because defending champion Dallas Seavey is still in second place. Sass told the crew Seavey is “still right back there.” Seavey also is into White Mountain. But he arrived about 2 1/2 hours after Sass.