Here's a nice 2.4 mile round trip hike on a quiet forest road, east of Prineville. Don't get this Wildcat Mountain mixed up with the other three summits with the same name in Oregon.
K7ATN's blog
Monte Cristo HP, WA | Nov 2018
Here for some activation fun west of Trout Lake, Washington is Peak 4420 or Monte Cristo Range High Point. It's a bit out of the way, but is a near drive-up four pointer accessed by a road that a passenger car can handle. Check out this updated trip report here: http://www.pnwsota.org/blog/kj7eha/2020-june-24/monte-cristo-hp-june-2020-updated-info.
Humbug Mountain, South Coast OR | Nov 2018
Humbug is a great hike on the South Coast, even if it is a steep six miles round trip and 1700 feet of gain. Find the well-marked and large parking lot for the trailhead about five miles south of Port Orford, Oregon on the west side of Highway 101. No parking pass is required.
After you climb about a mile, there is a slightly shorter (and slightly steeper) option to take the West Trail - I suggest that you try both, as the West has some nice peak-a-boo views, and the East has some amazing old growth. All trails are well-graded and likely busy during the summer months.
Hancock Hill, OR | Posted
Hancock Hill is a summit off of Highway 38 near Elkton, Oregon. There is a gate and a No Trespassing sign right off the highway.
Bennett Butte, OR | No Access from Langlois, OR
Maps show that Bennett Butte could be accessed from Langlois Mountain Road and Bennett Butte Road from the west. However, just before the turn for Bennett Butte, county road maintenance ends and there is a gate with very unfriendly Private Property and No Trespassing signs.
It could be that this summit might be accessed from the east starting at Myrtle Point. There may also be a closed gate some distance before the summit where there is a radio site.
Peak 1461, OR | Private?
This summit is a short distance off Langlois Mountain Road (Langlois, Oregon).
However, it is behind a house with a loose, barking dog and one would need to walk up the driveway and pass only a few feet from the house to access the summit. This is likely private property.
Mount Wilson, OR | Posted
Mount Wilson, is on the Warm Springs Reservation and is posted and should be considered private. https://warmsprings-nsn.gov/bchapter/trespass/
Veda Butte, OR | July 2017
This is a short one mile hike 400 feet of gain that you reach by driving about five miles on a poor road. There's some bushwacking required to make the Activation Zone.
Peak 3410, OR | August 2018
Peak 3410 is about 10 miles back into the Tillamook State Forest. Although once you get there it is really a near drive-up, the drive on those roads might feel like you've been hiking five miles by the time you get there. You'll want a high clearance vehicle, a good map, and GPS to reach this summit off Highway 6.
Bull of the Woods, OR | Sep 2018
Here is a lovely hike in the south reaches of the Clackamas watershed. The hike is about 6.5 miles round trip and 1000 feet of gain. Although about two hours from Portland, it's also a nice drive to the trailhead with good signage along the way. Only the last half mile or so would be challenging in a passenger car.