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Swift Trail: Mount Graham, Pinaleño Mountains, Arizona
Photo: Outdoor Craziness · CC BY-SA 3.0 · cropped

Drives Arizona Tucson and Southern Arizona

Swift Trail: Mount Graham

Swift Trail · US-191 junction → Shannon Campground

Intense21 mi50 min6,500 ft climbHigh point ≈ 9,100 ftOne way
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The drive

The Swift Trail is AZ 366, climbing from the desert south of Safford up Mount Graham in more than 20 miles of switchbacks. You rise from cactus through oak to pine and fir, ending where the pavement stops near Shannon Campground.

It's steep and winding the whole way, with the sharpest bends in the upper half. Past the end of the pavement a gravel road continues, which closes in winter.

Along the way

  1. US-191 junction
  2. Shannon Campground
Elevation
6,500 ft of climbing · high point ≈ 9,100 ft
US-191 junctionShannon Campground
Curves
Twisty most of the way
US-191 junctionShannon Campground
GentleHairpins

Good to know

  • ADOT closes the road past Shannon Campground in winter; last year the closure date was November 15.
  • The road is steep and narrow; allow extra time.
  • Lower parts can close for snow as needed.

Open all year, weather permitting. Roads close for snow, fire, storms and repairs: before you set off, check Arizona 511 (ADOT).

Questions about this drive

How long does the Swift Trail take?

The Swift Trail from US 191 to Shannon Campground is 21.2 miles and takes about 50 minutes.

Is the Swift Trail open in winter?

The highest section, half a mile past Shannon Campground, closes for the winter, and lower parts can close for snow.

How twisty is the Swift Trail?

Intense. Most of the 21 miles is switchbacks.

What you get in the app

Turn by turn, on this roadSpoken directions along the exact route. Carve never reroutes you onto a faster one.
Preview it in 3DFly the whole drive over satellite and terrain before you go.
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Live Group TrackingAPEXEveryone on the route, on the map, by name.
Road conditionsAPEXWet or dry, ice, fog and wind along the road before you go.
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Distance, time, elevation, curves and intensity are from Carve's route. Checked 2026-10-28.

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Map of Swift Trail: Mount Graham, from US-191 junction to Shannon Campground