KALISPELL, Mont. (AP) — Glacier National Park's Going-to-the-Sun Road has opened for the season after delays caused by snowfall.

The National Weather Service advised motorists on the 50-mile road Sunday to drive carefully due to fog.

The Daily Inter Lake reports travelers on the Going-to-the-Sun Road also should be aware of possible rock falls, especially west of Logan Pass.

Late-season high-altitude snow had closed the Beartooth Highway south of Red Lodge into Wyoming, though that road has since reopened.

In Colorado, icy conditions and snow drifts up to 5 feet high closed Trail Ridge Road in Rocky Mountain National Park. Park officials said they were not sure when the road might open.