When you say "as far as I can", do you mean as far as the road goes, or as far as time allows?
Like any road, there are a variety of changing vistas in both directions! If you have 14 days and plan to go to the CA/OR border, I'd suggest taking something like 9 days going up on Hwy 1 and 5 says coming back mostly on 101.
there are so many places where you can travel through the hills between 1 & 101, especially north of Bodega Bay. Hwy 128 & Hwy 20 (before 1 & 101 merge at Leggett) are beautiful. Take as much tike as you can in the Redwoods, watch the Tule Elk at Prairie Creek, eat at the Samoa Cookhouse north of Eureka, stop lots to soak in the mind-blowing beauty of Del Norte, enjoy the harbor at Crescent City (sometimes called The Tsunami Magnet).
Then, either continue up the Oregon Coast to Florence (as far as I've gone on 1/101) or begin the trek south, riding 299 to Weaverville or Shasta (and back the next day?)...
Dayum, the road is calling!
Keep in mind that, if you are planning on doing this before Labor Day, a good plan and reservations are strongly advised.
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