This was a very nice hike from Arizona into Utah. We drove to within 1 mile of the trailhead, and then hiked. In the end, it was a 5 mile hike. Sunlight Arch is more like a hole in the ground that forms an arch (hence Skylight).
Hiking out and back, we did not run into anyone until we got within a few hundred feet of our truck. In the end, we only encountered 3 people and a dog.