Mule Deer trail is a 3.5 mile out-and-back trail that it part of the Maricopa Trail within White Tank Mountain Regional Park. This is a beginner to moderate friendly trail for both hikers and mountain bikers alike. 

This trail is relatively flat and quiet compared to other trails in the park; it's an easy desert walk or ride with only minor elevation gain (less than 300 feet), making it a nice option for those looking for something less strenuous to do, or if you are looking for some desert serenity.

Beginning at the north end of the trail, you'll do a bit of an unnecessary b-line and then pass a spur trail heading to Area 4's group picnic area. This is where much of the climbing is done. It's a measly and gradual 96ft that heads around a small hill. Soon after, you'll meet up with the Bajada Trail.

Should you choose to continue along Mule Deer, you'll pass along some horse stables on your left (east). The rest of the trail is a mild meander at the foot of the White Tank Mountains. After crossing the main road, you'll wrap around and meet up with the South Trail. Return the 3.3 miles you came, or begin the rest of your loop, whatever that may be - there are plenty of options.Courtesy of hikearizona.com

There is a $6 vehicle entrance fee for the park, or a $2 bike fee.