
Four Peaks Backcountry
Four Peaks Backcountry is a hard 40+ miles off-road trail near Fountain Hills, AZ. It requires a properly built 4x4 with 33"+ mud-terrain tires, 3"+ lift kit, 4WD with low range and is best run October - May. Stock trucks and Jeeps are not recommended; plan on the required modifications before attempting it.
Trail Conditions
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Four Peaks Backcountry takes you into the rugged desert mountains east of Phoenix, ascending from Sonoran Desert to mountain pine forest. The trail system accesses Arizona's only amethyst mine and the base of the iconic Four Peaks, visible from across the Valley. Rocky creek crossings, steep grades, and increasingly technical terrain reward adventurers with sweeping views of the Verde Valley and Theodore Roosevelt Lake.
Fun Facts
Four Peaks is home to Arizona's only commercially viable amethyst deposit.
The four peaks are visible from much of the Phoenix metro area, reaching 7,657 feet.
Archaeological evidence shows humans have visited the area for over 7,000 years.
The amethyst found here is known for its deep purple color, among the finest in the world.
🛞 Tires
🔧 Suspension
⚙️ Drivetrain
🪢 Recovery
🛡️ Protection
Closest campgrounds to Four Peaks Backcountry:
- Cholla Campground · 8 mi
- Frazier Campground · 12 mi
- Schoolhouse Campground · 18 mi
- Eagle View RV Resort · Fort McDowell · 20 mi
Where to Camp
GPS Coordinates
Import into Gaia GPS, OnX Offroad, or Garmin
Map of Fountain Hills, AZ
5-Day Forecast
WHAT YOU'LL NEED
This trail rewards preparation. Run these tools before you load up, the numbers matter.
Tire Size Calculator
Convert tire sizes and compare diameter differences before you swap.
Running 35s or 37s? Confirm fitment and sidewall height before you go.
Gear Ratio Calculator
Find the right gear ratio after lifting or upsizing tires.
Low-range crawl ratio is everything on technical terrain, calculate yours first.
Wheel Fitment Calculator
Calculate backspacing and offset so wider wheels clear your suspension.
Extra wheel width = extra clearance on tight lines. Check offset before buying.
MPG Calculator
Estimate fuel economy after a tire upgrade, important for remote runs.
Bigger tires cut MPG. Plan your fuel stops for this trail.
Trail Matchmaker
Not sure this trail matches your rig's current build? Find out fast.
Answer 6 questions and confirm Four Peaks Backcountry is right for your setup, or find a better match.