Light at the End of the Tunnel

I was hoping to run outside yesterday, but fog shrouded us until after noon. It had cleared by mid-afternoon, but the lack of sunlight meant the sidewalks were still covered in snow. I went ahead and ran 8 miles inside on the treadmill. It was foggy again this morning, but the sun is out and the temperature is well above freezing, so I'm hoping this is the light at the end of the tunnel. The forecast for this week isn't that great, but I'm not giving up hope yet.