To many variables to give a solid answer. But there are questions. Do you have basement or attic access between the two locations? The cable could be run through those spaces, then up or down the wall.

You might search for low-voltage/network cable installers in your area. Because it’s a single cable run, you may not get much of a response, or a crazy expensive cost.

If you have a friend, or friend of friend who does network work, you might be able to get them to help, for the cost of material and beer.