The First Task is Up to You
Welcome aboard the RoadTrip America Forums!
Even if the three weeks is for a complete round-trip t San Diego and back, but particularly if the three weeks is just for the one-way drive to San Diego, you've got enough time to visit almost anywhere in the Midwest, Southwest, Rocky Mountain, and California Coast regions that you want. So, the first bit of work is actually up to you - Where would you like to explore? Remember that this will be different from your past experiences where you've just blown through the bulk of the US without so much as a pause. If you are now going to slow down and savor the lands you're driving in, it makes sense that you choose what those lands are. Note that your route could take you through the Ohio and Mississippi River valleys to the south and then out through the west Texas plains and desert Southwest; or it could take you around the Great Lakes, out the old Oregon Trail, and through the Rockies and red rock country of Utah, or out through the upper Midwest, the Badlands of South Dakota, perhaps Yellowstone, down through the Basin and Range area of Nevada and through Yosemite to San Francisco before following the coast to San Diego. The possible combinations are almost limitless. So, before we suggest detailed "advice on sites to see, things to do and places to stay", you'll have to at least give us some idea of where you would like to go.
AZBuck
That information is mostly on good maps.
Do you have good maps of the area the trip will cover? Most of what Buck asks you to tell him is marked on good maps. So check out some maps and see what it is that interests you along the way. Good maps also mark the scenic routes, which is what I look for when I want to stay off the interstates. If you don't have any, you should be able to get them all from CAA (free if you are a member). Or you may prefer a quality road atlas of north America.
When you have that, here is a paragraph to get you started:
Quote:
Originally Posted by AZBuck
Start with maps. Not GPS, not software, not Google, but real honest-to-god paper maps that show you your entire route, that you can mark up (and erase), that you can stick pins in, and that show something about the land you'll be driving through. Those are your essential tool in any RoadTrip planning process. Start by marking all the places you know you want to visit. Then connect the dots. Then look for more places of interest and scenic routes along the lines connecting the dots. Repeat until you've got as many sites and roads as you think you want.
Enjoy the planning.
Lifey
Just a few of many western wonders.
Glacier NP is a wonderful place to visit and not far from US2, although further south is Yellowstone and the Tetons. In the PNW you will find Mt Baker, Olympic NP and Mt Rainier to name a few. As you turn south you might like to visit Mt St Helens, the Columbia river Gorge and Crater Lake. You could head over to the Oregon coast and Redwoods NP in California on route to San Francisco or continue on an inland route to Burney Falls, Lassen volcanic National park, Lake Tahoe to Yosemite and across to San Fran and then take a few days to drive down the coast around Big Sur to LA and San Diego.
Many, many great options are possible and once you have a few dots on the map we can help to fill in the blanks.