IHG One Rewards. It's better to be a member. Join IHG One Rewards to unlock benefits that will immediately enhance your next stay. Welcome to the Holiday Inn Express Mechanicsburg PA. We are certain that you will relax in comfortable accommodations and enjoy our central location near the areas many businesses and most popular attractions. We are conveniently located off of Route 581 and Interstate 81. We are located 15 minutes from Carlisle and Harrisburg. Which means you can get to the Carlisle Fairgrounds or Government Offices within minutes. We are located in the middle of Chain Restaurants like Longhorn Steak House, Applebee's and Olive Garden as well as Wegman's and shopping centers.