From The RadioReference Wiki
1. Select a Map of the state to the Place to be Visit. Use the Map to select the route you plan to take. Also to id the Counties that you will counties and cities that you will travel through. 2. Use a spreadsheet to layout Agencies to be listed along the route to be taken. 3. Use the programming software for the scanner to be used. 4. For the scanner frequencies and/or other data to be use, You can use the Radio Reference Database and forums to Collect the data need for the trip. Also you can search the internet for info on the route take.
If you have any additional Ideas please list them