We drove down into GSMNP almost every day. From the top (center) down to the bottom park border is 35 miles and the speed limit is 35 mph. It usually took us about 1.5 - 2.00 to go each way since I requested we stop for me to get out and take pictures fairly often. Some days we drove to specific locations to hike to a waterfall, etc. I've arranged the GSMNP into sub-galleries.