Pro Guiding Service
Domestic & International Trips & Courses with Professionally Trained Mountain Guides

Improbable Traverse


A fun and interesting 7-pitch climb that traverses the West face of Guye Peak at Snoqualmie Pass.  This climb keeps it interesting with 4th class scrambling, a couple pitches of traversing, a long ramp, and a couple of pitches up to 5.8.  This climb is offered every day during the climbing season.

$300 Per Person
1 Days

Trip Information

Price is based on 2 climbers. Please call us for pricing for a single climber. 425-888-6397 x2 |

An interesting 7-pitch climb traversing the West face of Guye Peak at Snoqualmie Pass. After ascending a talus field to the base of the face you will ascend a few 4th class to low 5th class pitches to Lunch Ledge. The third pitch right before Lunch Ledge offers an option to climb more challenging cracks out to the right instead if you prefer. After Lunch Ledge you traverse for two pitches with some 5.8 moves to the base of a long ramp feature. Climb the 4th class ramp as it cuts across the face of Guye Peak for two pitches, then scramble to the summit!

We offer this trip every day during the alpine rock climbing season.

Duration: 1
Ratio: 2:1
Difficulty Level:
Click here to learn more about difficulty ratings.

Overall Difficulty: Very Difficult (5.10a)

Fitness Level: Moderately Strenuous

Technical Skills Required: Moderate

Private Trips Available

Pro Guiding Service proudly offers the most diverse ski touring and ski mountaineering programs of any guiding service in the Northwest.
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Private Trips

Pro Guiding Service proudly offers the most diverse ski touring and ski mountaineering programs of any guiding service in the Northwest. Smaller, more intimate custom itineraries or instructional tours are available for any of our destinations. Tell us what you want to do, and we can create a customized plan for you.
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per person
Price is based on 2 climbers. Please call us for pricing for a single climber. 425-888-6397 x2 |
View Dates & Availability
Payment Policy
If booking a domestic trip that is over 30 days away or an international trip that is over 60 days away, you can book your trip by paying a 20% deposit.  View Full Policy
Cancellation Policy
If you cancel for any reason 30 or more days before domestic trips or 60 or more days before international and Alaska trips, we will refund everything you have paid minus half of your deposit. No refunds will be provided if you cancel your trip for ANY REASON (this includes but is not limited to illness including CoVid-19, injury, or work-related issues) within 30 days of the start of domestic trips or 60 days of international and Alaska based trips.  View Full Policy

Equipment List

Base Layer
  • 1 Bottom - midweight or lightweight
  • 1 or 2 Tops - midweight or lightweight
  • Socks - 2 pair
Mid Layer
  • Windshirt or light soft shell jacket
  • Fleece or similar warm layer
  • Synthetic climbing or hiking pants
  • Shorts ok if forecast is good
  • Lightweight Waterproof/Breathable Jacket
  • Lightweight Waterproof/Breathable Pants--may be substituted with softshell pants if forecast is good
  • Warm Hat - should cover your ears
  • Sun Hat - baseball cap or visor
  • Lightweight gloves--wind block or fleece/wool
  • Warm gloves
  • Down or Synthetic Puffy-type Jacket
  • Gaiters--low top or full size (may not need in late season)
Personal Gear
  • Internal Frame Pack - 30 Liter/1800 minimum
  • Headlamp - lightweight LED recommended
  • 1-2 Water Bottles - liter bottles, wide mouth recommended
  • Small Knife
  • Sunglasses - adequate for snow travel
  • Sunscreen - SPF 25+, waterproof
  • Lip Balm - SPF 15+
  • Small Personal First Aid Kit - just the basics: blister care, ibuprofin, prescription meds, etc.; your guides will have a substantial group first aid kit
Technical Gear
  • Ice Axe - lightweight aluminum, 55-70cm (may not be necessary in late season)
  • Light Mountaineering/Hiking Boots - crampon compatible
  • Rock climbing shoes (depending on objective)
  • Boot Crampons - 10-12 point aluminum (may not be necessary in late season)
  • Climbing Harness - mountaineering style preferred (no padding; ex: Petzl Altitude, Black Diamond Couloir)
  • Helmet - climbing helmet UIAA approved
  • Climbing Equipment:
    • 3 Locking Carabiners - 2 regular lockers and at least 1 large HMS style
    • Belay Device
    • Person Anchor System
Optional Items
  • Camera - we’d like some shots for the PGS website!
  • Thermos - vacuum type
  • Electrolytes - tablets/powder/gel/blocks
  • Note Pad and Pencil - Rite-in-the-Rain brand waterproof notebooks work well
  • Compass - adjustable declination required
  • Altimeter
  • Map Case - large Ziploc bag works well
  • Maps - contact guiding office for appropriate quadrangles
  • Adjustable Trekking Pole(s) - nice to have for approach/crevasse navigation
  • Liner socks - if blister-prone
  • Neck gaiter - for protecting your face from sun, wind, cold

PGS Supplied

  • Elaborate Group First Aid Kit
  • Ropes
  • Emergency communication devices
Equipment Sales & Rental

Gearing Up Adventurers Since 1999 

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Why Book With Us? 

Certified Professional Guides & All Access
All of our guides have the highest quality training and certification in the industry, and you can be sure that we have the permits, licenses and insurance in every location we operate.
Safe, Well-Planned Tour Design
Every tour has a carefully thought-out guide-to-customer ratio. You always get a safe, high-quality trip or learning environment with us.
Pioneers In The Industry
You will travel and learn from experts. We've pioneered several alpine climbing routes, ski descents, and traverses and we've written books on skills and routes in the industry. 
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