Iwetemlaykin State Heritage Site

Iwetemlaykin State Heritage Site
“Short trails with spectacular views of the Wallowa Mountains pass Knight’s Pond, a cool summer oasis and a peaceful respite for hikers. Look for spring and summer wildflowers during your walk. You also may catch glimpses of deer, fox, bear and raptors.”
Brochure   Phone 541-432-4185  Here is their website.
Although the website for this site indicates some accessible hiking, the brochure does not. 
HikerwithcaneThe trail system is less than one mile and judging from the map in the brochure, you could enjoy a nice walk from the South Main Street trailhead.

Ecola State Park

Ecola State Park
Wrapping around Tillamook Head, between Seaside and Cannon Beach, Ecola State Park stretches along 9 miles of coastline and offers outstanding sightseeing and recreation opportunities combined with a storied past.”
Here is the Park website.  Phone 503-436-2844  Brochure  OregonHikers.org
Hikerwithcane? Clatsop Loop Hike is a 3 mile gravel road and I have found some references implying some of it is wheelchair accessible.  However, there is an elevation gain of 700 feet. The first 1/2 mile is not steep, but you need to call ahead to determine trail conditions.

Bridal Veil Falls State Park

Bridal Veil Falls State Park
“Bridal Veil Falls State Park is located near mile post 28 on the Historic Columbia River Scenic Highway and is accessed off I-84 at Exit 28.”  The upper, interpretive,  trail takes visitors around the precipice of the cliffs of the Gorge.  The trail is fenced to “protect visitors along the viewpoint while maximizing every vantage point of the magnificent view of the Gorge.”
Here is their website  Phone 503-695-2261
Wheelchair AccessibleUpper Interpretive Loop Trail is 1/2 mile and  “… takes visitors around the precipice of the cliffs of the Gorge”. “The trail is fenced beautifully with logged beams and wire to protect visitors along the viewpoint while maximizing every vantage point of the magnificent view of the Gorge.”

Banks-Vernonia State Trail

Banks-Vernonia State Trail
“Most of the route consists of an eight-foot wide hiking and bicycle trail paralleled by a four-foot wide horse trail. The gentle grade in all but one area allows hikers, bicyclists, equestrians and people of all abilities to enjoy the scenic mountains, fields and forests of Washington and Columbia counties.”
Here is the Trail website.   Brochure   Phone 503-324-0606 or 800-551-6949
Wheelchair AccessibleAbout 26 miles west of Portland, this 21 mile rail trail is a “…tree-lined, easy-grade pathway [which] conducts you through sun-dappled glades and across swift, clear streams, filling your nose with wildflower scents and your ears with the songs of birds.”

Alderwood State Wayside

Alderwood State Wayside
“Large trees characterize this forested park along Hwy 36 between Junction City and Triangle Lake. There’s a picnic area, restroom, and short trail along the Long Tom River”
Phone 541-937-1173  Here is their website.
Wheelchair AccessibleTrail along the Tom river is described as “short”.   Be sure to call ahead for trail conditions and to be sure it is accessible for you.

Cape Disappointment State Park

Cape Disappointment State Park
“Hike through old-growth forest or around freshwater lakes, saltwater marshes and ocean tidelands. … The beaches at Cape Disappointment also lure kite-fliers, sand-castle builders and those who love to walk and explore.”  There are eight miles of hiking trails.  The website claims an ADA compliant trail, but does not say which of the seven trails it is.  Neither the brochure nor the map give indications of the difficulty of the trails.
Here is the Park website.  Phone 360-642-3078  Brochure    Map  On EveryTrail.com
HikerwithcaneCape Disappointment Trail  1.2  miles  OregonHikers.org

Mt. Hood National Forest

Mt. Hood National Forest
“Mt. Hood National Forest extends south from the strikingly beautiful Columbia River Gorge across more than sixty miles of forested mountains, lakes and streams…”
Here is the Forest website.   phone 503-668-1700  Links to maps
HikerwithcaneLost Lake Loop at Lost Lake Campground 3.2 mile, described as “nearly level”. There are accessible fishing piers along the eastern lake shore, with some accessible paths.  Described by OregonHikers.org

Oregon Hikers Forum

Oregon Hikers Forum is a service of the Trailkeepers of Oregon, a non-profit organization.  They provide this marvelous Find a Hike page where you can put in your parameters to look for suitable hikes in Oregon and the Pacific Northwest.  I chose easy Family hikes with an elevation gain less than 500′ and came up with 186 trails.  Limit that to 2 miles or less and you get 81.  The Trailkeepers also have the online Oregon Hikers Field Guide for hiking in Oregon and Southern Washington.