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.