For an easy orientation to the state, take a look at a big roadmap of Alaska, and think about driving around the northern half of Alaska (the mainland) this way… Tok, Fairbanks, and Anchorage are the three points on a triangle (look at the map and use your imagination). South of Anchorage, you go around the Turnagain Arm (a big body of water), and you end up on the Kenai Peninsula. I strongly recommend going down on the Kenai but driving-wise, it is just a drive south to land’s end (the town of Homer), a few side trips (to Seward, Soldatna, the town of Kenai, and a few others), and then backtracking north back to Anchorage. However, this takes time.
Many of those planning to visit Alaska are simply confused about the amount of driving in state and the time it takes to see it. Actually, there’s not much highway driving in-state and that is generally a surprise to most first-time visitors. Consider this… Alaska is about 62 times larger than Vermont… and has about the same number of miles of highway! From Fairbanks (the northernmost city that most sane people would not drive north of) to Homer (on the southernmost tip of the Kenai Peninsula), it is only 600 miles!
Note that this does not mean you can see Alaska in a week or two of hard driving. You have many, many stops along those routes where you park the RV and then take day trips in your car. It takes at least a month on the mainland and a month on the Kenai Peninsula to see the sights, not rush, have some downtime, and enjoy the area.