Page Type Page Type: Mountain/Rock
Location Lat/Lon: 32.32520°N / 110.7916°W
Additional Information County: Pima
Seasons Season: Spring, Fall, Winter
Additional Information Elevation: 4409 ft / 1344 m
Sign the Climber's Log


Curving Blackett s RidgeCurving Blackett's Ridge from UN 4409

Northeast of Tucson, Arizona, is a land of rugged ridges and deep canyons. Rising up between the breathtaking Sabino Canyon and neighboring Bear Canyon is a jagged peninsula of land known as “Blackett’s Ridge.” Lining this ridge, trending roughly east-to-west and rising in elevation from lowest to highest, are frequently-visited UN 4409, the sinister-looking, UN 5001, famous Thimble Peak, and often-overlooked UN 5420.

This specific peak has a bit of an identity crisis. When locals says they’re “doing Blackett’s Ridge,” they typically mean they are hiking the trail from the Sabino Canyon parking lot to the terminus of the trail – just below the summit block of UN 4409. (Few have reported traversing the entire jagged line of Blackett’s Ridge.) USGS maps indicate a landform name of Saddle Back, though if you mentioned you were going to the summit of Saddle Back, most locals would have no clue what you were talking about. If Blackett’s Ridge could be said to have a summit, it would be UN 5420. So, for the purpose of this page, we’ll call this officially un-named mountain UN 4409.

Rank: 3835th highest peak in Arizona
Prominence: 349 feet
USGS Quad: Sabino Canyon
Recreation Map: Green Trails Map MAP NO 2886S: SANTA CATALINA MOUNTAINS

Rank & Prominence: Lists of John

White Tackstem
Poppies on UN 4409 (1)
Poppies on UN 4409 (2)
Poppies on UN 4409 (3)
Poppies on UN 4409 (4)
Poppies on UN 4409 (5)
Poppies on UN 4409 (6)
Poppies on UN 4409 (6)
Orange Mallow

Getting There

Northwest from trailNorthwest from trail
Grass and RockGrass and Rock

The vast majority of visitors to this summit will access the peak from the southwest, parking at the Sabino Canyon Recreation area. Here are driving directions:

Per Friends of Sabino Canyon:
From the intersection of Kolb Road and Tanque Verde Road, turn right on Tanque Verde and travel less than a mile to the intersection with Sabino Canyon Road. Turn left onto Sabino Canyon Road and travel north 4.5 miles. The park entrance will be on your right, just after the intersection with Sunrise.

The Sabino Canyon parking lot can fill up on nice weekends, so get there early or park on the side of the road near the entrance.

Mom enjoying lunchMom enjoying lunch
Me on the summit of UN 4409Me on summit
Mom on the summitMom on summit

Red Tape

Thimble PeakThimble Peak from UN 4409

•This summit and the primary route to it reside within National Forest Land that is open for recreational use.
•Dogs are not allowed in the main canyon area, or on the Bear Canyon or Sabino Canyon trails.
•There is a $5 per vehicle fee to park in the Sabino Canyon lot.
•This mountain resides within the Pusch Ridge Wilderness. Please follow LNT (Leave No Trace) principals:

1. Plan Ahead and Prepare
2. Travel and Camp on Durable Surfaces
3. Dispose of Waste Properly
4. Leave What You Find
5. Minimize Campfire Impacts
6. Respect Wildlife
7. Be Considerate of Other Visitors

UN 4409 summit knobUN 4409 summit knob
Tucson, Arizona, from the summitTucson, Arizona, from the summit


Crazy CactusCrazy Cactus
Summit birdSummit bird

There are no campgrounds immediately near the Sabino Canyon Recreation Area.
The Santa Catalina Ranger District operates several campgrounds along the Santa Catalina Highway en route to Mount Lemmon. These are (in distance up the highway from the valley):

• Molino Campground
• General Hitchcock Campground
• Rose Canyon Lake

Nice neighborhood!Nice neighborhood!
Vastness of Sabino CanyonVastness of Sabino Canyon
Blackett s RidgeBlackett's Ridge
Pondering Sabino CanyonPondering Sabino Canyon

Weather & Seasons

MonthAvg HighAvg LowRain
January64.5 F38.9 F0.99 in.
February68.4 F41.6 F0.88 in.
March73.3 F45.1 F0.81 in.
April81.5 F50.5 F0.28 in.
May90.4 F58.6 F0.24 in.
June100.2 F68.0 F0.24 in.
July99.6 F73.4 F2.07 in.
August97.4 F72.4 F2.30 in.
September94.0 F67.7 F1.45 in.
October84.0 F57.0 F1.21 in.
November72.3 F45.1 F0.67 in.
December64.6 F39.2 F1.03 in.

*A trip to this summit, thanks to low
elevation, would be most comfortable in the fall,
winter or spring.

*March and April are primo wildflower viewing months.

*Summer temperatures in this part of the Sonoran
desert can be worse than uncomfortable;
they can be downright dangerous!

*According to the United States National Weather Service,
the record high temperature for Tucson, Arizona,
set on 26th June 1990, was 117 degrees Farenheit
/ 47 degrees Celsius

UN 5001 close upUN 5001 close up
UN 4409 summitUN 4409 summit
UN 5001 and Thimble PeakUN 5001 and Thimble Peak
Santa Catalina neighborsSanta Catalina neighbors



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