Leif Erickson Drive is a 22.6 mile moderately trafficked out and back trail located near Portland, OR that offers the chance to see wildlife and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.
dogs on leash
After hurting my ankle a third time, I stopped trail running and now mostly run stretches of this "road". I have never seen a car on it and its obvious this trail was made just to fight fires and bring in building supplies to maintain other trails. The trail head near Thurman is the most busy and has the most parking. I would recommend starting at the Saltzman trail head near Portland, hiking up to Lief Erikson and hiking toward Old Germantown road. The 8 1/2 mile marker is my favorite part and has a beautiful valley.