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The Slab

Routes Sorted
L to R R to L Alpha
$00pr kr33m S 
Boys with Power Toys S 
Bulges T 
Diagonal T 
Family Man S 
Film Noir S 
Hippopotamus S 
Junior Niblits 
Just Another Boy's Climb T 
k00kEEz and krEEm S 
Keyhole, The T 
Kr33m in the $33m TR 
Left 'N Up T 
m1n1-kr33m TR 
Nasty Boys S 
Northeast Arete T 
Pen 15 S 
Prime the Pump S 
Return of Dow, The T 
s00kr33m S 
Shalohsh S 
Sick For Sleeping S 
Sweet NiBLitz S 
Syzygy T 
Trad kr33m T 
Undertow S 
Whipping Post S 

The Slab Rock Climbing 

Photos:  Recent | Best | Popular
Elevation: 7,000'
Location: 39.9629, -105.287 View Map  Incorrect?
Page Views: 29,676
Administrators: Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac, Kristine Hoffman (sitewide)
Submitted By: Anonymous Coward on Nov 30, 1999
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BETA PHOTO: Summit ridge - note the dead 'descent tree' in cen...

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The slab is the widest (broadest) chunk of stone in the Flatirons with endless possibilites for 5.3-5.6 slabmongering on its expansive, 500-foot-tall east face. It sits in a pleasant location at the mouth of Fern Canyon and offers great views to the east and south from its summit ridge.

In addition, the north and west faces are host to a handful of great sport routes in the 5.11+ to 5.12 range on steep, bomber stone. Bouldering possibilities can be found in the trees below and to the south and west of the slab.

To descend the east face routes, scramble south along the crest of The Slab until it's possible to either downclimb or execute a short rappel from a prominent notch near the terminus of the crest.

Getting There 

The most direct approach to the slab is via the North Shanahan Ridge Trail. Drive west on Table Mesa from Broadway and turn left (south) on Lehigh. Drive most of the way up the hill and turn right on Cragmoor, which dead ends after two blocks.

Park in the dead end and follow a trail west and uphill to the mesa above you. From here, continue west 20-30 minutes along the very wide North Shanahan Ridge Trail, passing a junction with the Mesa Trail en route. The Slab rears up ahead of you the further west you go; if you descend north into a gully you've just passed it!

For the east face routes cut left (south) off the main trail onto a climber's path through the ferns. To access the north and west sides, continue along the Shanahan Ridge Trail another 2 minutes (thru the gully) until you hit the Fern Canyon Trail. Follow this up and steeply west for 3-4 minutes until it makes sense to head south (left) across a talus-filled bench to reach the routes.

Climbing Season

Weather station 2.1 miles from here

27 Total Climbing Routes

['4 Stars',4],['3 Stars',11],['2 Stars',10],['1 Star',2],['Bomb',0]

Classic Climbing Routes in The Slab

Mountain Project's determination of the classic, most popular, highest rated climbing routes for The Slab:
Diagonal   5.2 3 8 II 8 D 2c R     Trad   
Left 'N Up   5.2 3 8 II 8 D 2c R     Trad   
Syzygy   5.2 3 8 II 8 D 2c R     Trad   
Bulges   5.2 3 8 II 8 D 2c R     Trad, 500'   
Sick For Sleeping   5.11c 6c+ 24 VIII- 24 E4 6a     Sport, 1 pitch, 80'   
Whipping Post   5.11d 7a 24 VIII 25 E5 6a     Sport, 1 pitch, 90'   
Just Another Boy's Climb   5.12a 7a+ 25 VIII+ 25 E5 6a     Trad, 1 pitch, 100'   
Shalohsh   5.12a 7a+ 25 VIII+ 25 E5 6a     Sport, 1 pitch, 75'   
Family Man   5.12- 7a+ 25 VIII+ 25 E5 6a     Sport, 1 pitch, 90'   
Undertow   5.12b 7b 26 VIII+ 26 E5 6b     Sport, 1 pitch, 80'   
Prime the Pump   5.12b 7b 26 VIII+ 26 E5 6b     Sport, 2 pitches, 100'   
Boys with Power Toys   5.12b 7b 26 VIII+ 26 E5 6b     Sport, 1 pitch   
Nasty Boys   5.12 7b+ 27 VIII+ 26 E6 6b     Sport, 1 pitch, 100'   
Film Noir   5.12c 7b+ 27 IX- 27 E6 6b     Sport, 1 pitch, 95'   
k00kEEz and krEEm   5.12+ 7c 28 IX 27 E6 6b     Sport, 1 pitch, 85'   
$00pr kr33m   5.13a 7c+ 29 IX+ 29 E6 6c     Sport, 1 pitch, 115'   
s00kr33m   5.13a/b 8a 29 IX+ 29 E7 6c     Sport, 1 pitch, 75'   
Pen 15   5.13b 8a 29 IX+ 30 E7 6c     Sport, 2 pitches, 100'   
Browse More Rock Climbing Classics in The Slab

Featured Route For The Slab
Rock Climbing Photo: Ted Lanzano on his FA.

s00kr33m 5.13a/b 8a 29 IX+ 29 E7 6c  Colorado : Flatirons : ... : The Slab
The route climbs the rainbow-colored, bulging wall right of Boys with Power Toys, on the northwest flank of the Slab, Fern Canyon. Kurt Smith and Chris Beh installed the original anchors and two directional bolts circa 20 years ago, before the ban, but were unable to get back in time to finish the climb. It's been a long wait, but well worth the effort! Props to Kurt and Chris for their eye for a line, and thank you, Chris, for letting us finish it.Climb two bolts up a thin vertical...[more]   Browse More Classics in Colorado

Photos of The Slab Slideshow Add Photo
Rock Climbing Photo: Winter conditions on The Slab.
Winter conditions on The Slab.
Rock Climbing Photo: Afternoon sun on the West Face of The Slab.
Afternoon sun on the West Face of The Slab.
Rock Climbing Photo: Composite panorama of the Four Mile Canyon fire, 9...
Composite panorama of the Four Mile Canyon fire, 9...
Rock Climbing Photo: The west face of the Slab is steep. Note early smo...
The west face of the Slab is steep. Note early smo...
Rock Climbing Photo: The Slab-ness.
The Slab-ness.
Rock Climbing Photo: The Slab is the obvious, large rock in this photo.
BETA PHOTO: The Slab is the obvious, large rock in this photo.
Rock Climbing Photo: North arete of The Slab
BETA PHOTO: North arete of The Slab

Comments on The Slab Add Comment
Show which comments
Comments displayed oldest to newestSkip Ahead to the Most Recent Dated Feb 16, 2017
By Chris Beh
Feb 16, 2017
There are two new routes between Undertow and Sooper Kreem. Rad Kreem is the right had line, and Whipped Kreem is the left line. Notice the big RED TAGS?!!!

I have spent considerable time and money on hardware developing these routes with Erik Fedor, the guy who put up Undertow BITD. I would appreciate some patience from our fellow climbers to allow us to finish redpointing the routes before we open them up to the community. Winter set in on us before we could finish them last year. We both have busy family lives, and it isn't so easy to get up there together. I hope to get them done by the end of May or sooner. Thanks again for the patience, and btw there is quite a bit of rock out there in the Flatirons for any other would be new routers.

Sorry, I am sounding a might testy here, but some other new routers have showed up at their red tagged projects in The Flatirons to find climbers on the routes. That is poor form, IMO.
By adam brink
From: Boulder, CO
Jul 19, 2008
Is the new route to the right of Boys with Power Toys done yet? Any idea on difficulty and quality? It looks to be one of the best sweeps of stone up there and spanker hard. Thanks for the work!
By Pinklebear
Oct 15, 2009
The new climb (approved by the FHRC in the June cycle) right of Undertow is in now. Five bolts to double-bolt anchors (5.10+) - this is Paul Glover's climb, though he asked us to install it for him while he's in Nepal. Once he's back, I'm sure he'll add it to the database. Enjoy!
By Pinklebear
Mar 29, 2010
March 2010 new-route application through the Flatirons Climbing Council's Fixed Hardware Review Committee: flatironsclimbingcouncil.wordp...

Please click on the above link to submit comments on the proposed climb; and to have a vote in the process, come to the FHRC public meeting on April 28, 2010, at 6:30 p.m. at Movement Climbing + Fitness, Boulder, CO.
By Pinklebear
May 12, 2010
June 2010 new-route application through the Flatirons Climbing Council's Fixed Hardware Review Committee: flatironsclimbingcouncil.wordp...

Please click on the above link to submit comments on the proposed climb. The deadline closes June 15; this is the only route submitted this cycle. There will be a public meeting held June 23, Wednesday, at 7:30 p.m. at The Spot gym, Boulder.
By Pinklebear
Jun 24, 2011
Two Flatirons Climbing Council Fixed Hardware Review Committee (FHRC) applications concerning the Slab have been submitted for the June cycle.

•The first, an application to update the fixed piton on Trad Kr33m can be found here: flatironsclimbingcouncil.wordp...
Please visit the link for more info and to add any comments.

•The second is for a new 5.11, Sick for Sleeping, right of the existing climb Hippopotamus, on the Undertow ledge. More info here as well: flatironsclimbingcouncil.wordp...

The FHRC will hold its public meeting Wednesday, July 6, at 7 p.m. at The Spot gym, Boulder, Colorado, to discuss and vote on these applications and one other for the June 2011 cycle. Anyone interested is invited to come participate, comment, and cast a public vote in person.
By Pinklebear
Nov 7, 2011
Five applications have been submitted to the Fixed Hardware Review Committee (FHRC) of the Flatirons Climbing Council (FCC) for the September 2011 voting cycle:

•Two applications for new climbs, a 5.11 on the Slab and a 5.10 on Dinosaur Rock
•Two applications to add new, lower first bolts to the existing climbs Touch Monkey, a 5.11b on Der Zerkle, Dinosaur Mountain and to Short Attention Span, a 5.11d on Overhang Rock, Bear Canyon.
•One application to add an anchor to the existing climb Big Bob Cranks on Dinosaur Rock.

To view and comment on these four applications, please visit flatironsclimbingcouncil.wordp...

The vote and public meeting for this cycle will be held Tuesday, December 6 at 6:30 p.m. at The Spot gym, Boulder, Colorado. Anyone interested in voting on and discussing these applications is encouraged to attend!
By Pinklebear
Jan 2, 2012
One of the four applications submitted for the January 2012 cycle of the Flatirons Climbing Council's Fixed Hardware Review Committee is on this formation, the Slab. (The new deadline applications are January 1, April 1, and August 1). It is for a 30-meter 5.12+ called "Pogo Lord."

To see the applications and leave comments, please visit: flatironsclimbingcouncil.wordp...

It's probably best to leave comments on each individual route by sending them to us via email for now:

The public meeting and vote on these applications will be held Thursday, February 2 at 6:30 p.m. at The Spot gym, Boulder, Colorado. Anyone interested is welcome and encouraged to attend!
By Flatirons Climbing Council
May 15, 2016
An application for bolting a new route on the Slab has been received by the FCC for the May 1 cycle. Details of the proposed route can be found here on the FCC site:

Please feel free to post any comments you have on the application. The public meeting will be held at the Spot on June 2, 2016 at 6:30, and everyone is welcome to join and vote there.
By Mike Humphries
From: Arvada, CO
Jun 13, 2016
I found a pair of belay glasses at the Slab on 6/12/16. Please describe them, and I would be more than happy to return to their rightful owner.
By Phil Lauffen
From: The Bubble
Feb 16, 2017
What is the status of Rad Kr33m? There is a ton of chalk on it and two distinct starting locations? Or are there two distinct lines?

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