On my 3-day weekend last month I took a hike off of Mountain Loop Highway, which is closed, so I had around 6 miles of additional road walking. I did not make it to the summit because I got fed up at the last steep snowshoe section and it was getting dark. On long treks like this, it is always a good idea to have a set turn around time. Especially in winter when conditions are more severe, exhaustion & hypothermia are real threats. Listen to your gut and avoid getting summit fever. Mountains