PA 26 leaves Huntingdon for Oneida Township and becomes Standing Stone Road, heading through a mix of farmland and woodland with some homes a short distance west of Standing Stone Creek. The road winds through more forested areas and curves north to cross the creek before passing east of a golf course. The route turns northeast and then north as it runs through wooded areas with some residences, passing through the community of Center Union. PA 26 continues through forests with some farm fields and development, curving northeast and crossing the Standing Stone Creek again. The road runs through more rural land and passes through the community of Donation before it enters Miller Township. The route continues northeast through woodland and farmland with some homes, with the Standing Stone Creek becoming closely parallel to the southeast before the route heads through the community of Jackson Center. PA 26 curves north alongside the creek into forested areas. The road winds north through a mix of farmland and woodland, crossing into Jackson Township. The route turns northeast and heads through agricultural areas, reaching an intersection with PA 305 in the community of Ennisville. Here, PA 26 turns east to form a concurrency with PA 305 on Greenwood Road, crossing the Standing Stone Creek and running through more rural areas with some homes. PA 305 splits from PA 26 in McAlevys Fort by turning to the southeast, while PA 26 turns north as McAlevys Fort Road and crosses the Standing Stone Creek again. The road curves northwest and passes through farmland before it heads into forested areas with some homes. The route passes southwest of Whipple Dam State Park before it crosses into Barree Township. At this point, PA 26 begins to ascend Tussey Mountain and heads into Rothrock State Forest, following a winding path and turning northwest and then northeast as it climbs the mountain.