Bend, Or. to Newport, Or.

Since you are not towing I would suggest
Hwy 20 From Bend to Lebanon
Hwy 34 From Lebanon to Corvallis
Hwy 20 From Corvallis to Newport

This is the most direct route.

Driving from/thru Lincoln City to Newport on Hwy 101 in July is very crowded and slow going.

Paul

Go north to Lincoln City and take 22. Head on 22 east.....just went that way 2 weeks ago.....you will come out at Sisters and then a short drive to Bend. Good road all the way.

Century Drive could be a beautiful detour, but would add hours to your trip. It'd be a better day trip while you're in Bend.

McKenzie Pass is scenic and headed the right direction. It would still add some time, but it has some pretty cool scenery including a huge lava field and mountain views. Belknap Hot springs is on the other end of Hwy 242 and is neat too.

Hwy 20 is the most direct.

Hwy 22 through Lincoln City is longer, but will take you past two Indian casinos if you're interested in that sort of thing.

20/22/18. Is going to be the fastest and easiest.
Where are you at? We're hosting at Lapine this month.