Crestmont Land Trust
The Crestmont Land Trust is a privately owned conservation area just to the west of Fitton Green and near the settlement of Wren. It features a network of trails and a variety of habitats, including oak savannas, prairie meadows, and riparian areas. More information about these trails is available here. Parking is available at the west end of Cardwell Hill Drive (see location). The 14 mile route from downtown Corvallis takes about 21 minutes (see route).
The route below is just an example of how you can create a ~5 mile long route in the land trust. Note that you can access this area from Corvallis by hiking or bicycling by using either the Cardwell Hill Wagon Road or the Mulkey Ridge Trail.