We might call this Peterson Summit rather than Peak 1700 - it's a drive-up in the Coast Range about 20 miles north of Tillamook and 20 miles south of Cannon Beach. The road is totally "Prius-able" (passable in a passenger car).
1.3 mi, +680 feet
This is a good early season summit and is also suitable for bicycle access.
There are a number of options to access this summit. It can likely be nearly a drive-up if it is approached from Hwy-278 to the north going south past Road Agent’s Rock. It may also be accessed from the town of Bannack year-round. Bannack was originally the territorial capital of Montana and is now a historic ghost-town state park that is well worth visiting. We accessed the summit by foll
Illahee Rock Lookout is a relatively easy hike, 1.9 miles and 590 ft. elevation gain, with good road access from the North Umpqua River (Highway 138). The trail and its access are well described on several web pages and William Sullivan's book “100 Hikes in Southern Oregon”, so I won't repeat that here.
South Fork Mountain can be a drive up. It is somewhat less than a mile from NF-4540 on an unmarked road. The fork off of NF-4540 is at approx. 45.101, -122.249. From here a high clearance vehicle that you don't mind getting scratched is required. The road is quite overgrown and has drainage ditches cut across it at various places. It opens up a bit before you get to the top, so you can park and make your final ascent by foot. I had to drive to the top after activation to turn around. A shorter wheel base vehicle might be able to avoid that.