If you're looking for a meeting place or a good stop around ½ or halfway between State College and Troy, PA, you can try Nippono Park, PA, which is almost an hour northeast of State College, or about 1 hour southwest of Troy, PA.
Other possible places to stop near the midpoint include Antes Fort, Level Corner, and Garden View.
About ¼ or a fourth of the way, you can stop at West Beech, PA. This is about half an hour northeast of State College.
About ⅓ or a third of the way, you can stop at Lock Haven, PA. This is about half an hour northeast of State College.
About ⅔ or two thirds of the way, you can stop at Trout Run, PA. This is a little over 1 hour northeast of State College, or almost an hour southwest of Troy, PA.
About ¾ or three fourths of the way, you can stop at Calvert, PA. This is about 1½ hours northeast of State College, or about half an hour south of Troy, PA.
If you drive straight through without stopping at all, the total distance is 112 miles. The distances shown above don't include local roads to get into each town, so if you're planning a long road trip, make sure you factor in traffic and road conditions, rest stop breaks, and interesting detours along the way. If you're in a rush, you can do the trip with zero stops, and your total travel time would be around 2 hours.