Halliday Trail is a 8 mile lightly trafficked out and back trail located near Metaline Falls, WA that features a great forest setting and is rated as difficult. The trail is primarily used for hiking and mountain biking and is accessible year-round.
Directions from Metaline Falls: Follow Hwy. 31 north for 6.5 miles to the junction with Forest Service Rd 180. Turn right; trailhead is located immediately to the left. Adequate parking for two small horse trailers.
If your goal is to get a lot of exercise, this is the trail for you. Lots of steep uphill, however not many views. The only view is about a mile up the trail. There is really cool fen partway up the trail if you like rare plants. You can loop this trail with two other ones and come out on the Red Bluff trail for about an 11 mile one way trip. You just need two cars at Red Bluff and Halliday. Nothing at all spectacular but lots of up and down. Might be good for experienced mountain bikers in the shoulder season.