Christmas Day Hike at Gateway Trailhead Embrace the spirit of the holiday on this picturesque hike on the Gateway Loop that will take you into the heart of the McDowells. Elevation gain of 700 ft. Location: Gateway Trailhead - 18333 N. Thompson Peak Pkwy. Scottsdale, AZ 85255 Skill level: Moderate Distance: ~4.5 miles Time: ~2.5