Airplanes can file flight plans but there is no provision for a hiker to do,so.
When going alone in a wilderness area (that has cell phone coverage) or on a boat, arrange for a friend in a secure area to receive periodic position reports. (i.e. - "I am at the intersection of county road sand shawnee creek taking the dirt road to the north. I expect to camp 4 kilometers down the road. My GPS coordinates are..."
Make sure they don't erase these posts until you bare safely home.