The T-Squared Trail is a 5.7-mile (9.2 km) linear hiking trail in north-central Pennsylvania, through portions of Sproul State Forest and Tiadaghton State Forest.

[4] The T-Squared Trail begins at a junction with the Donut Hole Trail, along Cougar Run in Sproul State Forest and about five miles north of Hyner Run State Park.

[5] The T-Squared Trail heads to the north and immediately climbs very steeply to the top of the Allegheny Plateau and then briefly traverses a high hilltop area.

This time the trail remains on relatively high ground and walks briefly on Dry Run Road at 3.0 miles, near the border into Tiadaghton State Forest.

The trail continues northbound and jogs briefly on Benson Road at 4.6 miles.