At the Deep Creek Campground, there is an unpaved road that leads away from the falls area. The Thomas Divide Trail starts at the end of this road. Totaling 13.8 miles, it is the second-longest trail in the Deep Creek area, just behind the Deep Creek Trail. This trail is used to not only get to other trails, but to also link the Deep Creek campground to the switchback area of Newfound Gap Road.
The trail begins from the unpaved road and goes 1.1 miles, where the Stone Pile Gap Trail branches off to the left. Going 2.1 miles further, the Indian Creek Motor Trail branches off to the left. From here the Thomas Divide Trail goes 2.4 miles to where it intersects with the Deeplow Gap Trail. After this, the trail climbs 3.1 miles to Newton Bald around Campsite #52.
From here, the Thomas Divide Trail goes about 0.5 miles along the Mountains-to-Sea Trail before branching off from it to the right, where the Mountains-to-Seas Trail continues to the left as the Sunkota Ridge Trail. There is then a 2.8-mile section to where it meets Kanati Fork Trail on the right. The last section of trail climbs up 1.8 miles to Newfound Gap Road.