With the development of smart phones I have live access to food, camping, motels and everything else. I have North America City Navigator loaded on the GPS to use when I can't access the internet which happens more than I expected in the Pacific Northwest.
I can plot my way, know my ETA, see local streets and landmarks, track my elevation changes by percentage and keep detailed records of milage, elevation and exact location. This can be stored on an internal chip then down loaded onto my PC. This will give me a detailed record of my entire journey.
It takes two AA rechargeable Lithium batteries that last a full day. I have a total of 8 that can be recharged in less than an hour.
I use my phone or Ipad mini to plot long trips, plus I have paper maps and a magnetic compass. I pick up a new state map at each state line. Relying completely on GPS routing can really be frustrating. Taking the long view saves an extra climb or a dangerous road.
One hard skill to develop is choosing the best bicycle route. Elevation changes, traffic issues and weather patterns are trial and error. Going around a mountain is usually farther but easier than climbing up and over. Do this enough and you will figure it out. The long view works best.