The Merkle Trail at Usery Mountain Regional Park in Mesa, Arizona is an easy 1 mile loop hike that circles the Merkle Hills. While this trail does not have any specific view points, you'll get amazing views of the surrounding mountains, including Pass Mountain (aka "Scarface"), and the giant arrow to Phoenix mountain sign.
The trailhead can be found on both the north and south side of the Merkle Hills; however, the northern trailhead has a small spur trail that leads into the loop itself.
The trail itself is flat and unobstructed (no large rocks to trip over), so you can hike around while enjoying the scenery. This trail is also a "boundary-free" trail, so you're encouraged to leave the trail and explore around it.
Dogs are allowed on this trail.