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Fourth Flatiron

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Arc de Triumph S 
East Face, Extra Credit Summit T 
East Face, North Side T 
East Face, South Side T 
East Face/4th Flatiron T 
Excellent Crack T 
Jester T 
Lower South-East Gully T 
No Balls At All 

Fourth Flatiron  

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Location: 39.983, -105.2936 View Map  Incorrect?
Page Views: 15,536
Administrators: Ben Mottinger, Leo Paik, John McNamee, Frances Fierst, Monomaniac, Kristine Hoffman (sitewide)
Submitted By: George Bell on May 6, 2002


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John Fernandez on the l-o-o-n-g 3rd pitch of the e...

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The Fourth Flatiron is probably the least climbed Flatiron (and the last to be added to this site as well). It is a giant piece of rock, easily bigger than the 3rd, but it is broken up into three sections separated by south facing gullies, breaking up any clean climbing lines from base to summit. The first section begins right off the Royal Arch Trail (although this spot is not obvious, see below), and the second section sweeps up into several summits, the most northern of which is Green Mountain Pinnacle (a separate rock on this site). The third section sweeps up and merges with the SE ridge of Green Mountain.The summit of the third section is the highest of the five Flatirons, and it is also the easiest to downclimb off of.

Getting There 

To find the base of the Fourth Flatiron, head up the Royal Arch trail to Sentinel Pass. Here the trail goes down steeply for a hundred feet or so, then levels off. Right after passing the Fourth Flatironette, the trail starts up again steeply on some switchbacks. There is a weird diagonal cave under the south face of the Fourth Flatironette that can be a useful spot in a downpour. The next rock you come up to is the Fourth Flatiron, it is only a few feet right of the trail itself. After you pass the base of the Fourth, you know you've gone too far when you cross a drainage (Tangen Spring); during wet periods there is actually a stream going down the trail here and it may be icy in the winter.

Climbing Season

Weather station 3.5 miles from here

9 Total Routes

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

The Classics

Mountain Project's determination of some of the classic, most popular, highest rated routes for Fourth Flatiron:
East Face/4th Flatiron   5.4 4a 12 IV 10 VD 3c R     Trad, 10 pitches, 1000'   
East Face, South Side   5.4 4a 12 IV 10 VD 3c     Trad   
Excellent Crack   5.8 5b 16 VI- 15 HVS 4c     Trad, 1 pitch, 80'   
Browse More Classics in Fourth Flatiron

Featured Route For Fourth Flatiron
On the first piece of the Fourth Flatiron, Royal A...

East Face/4th Flatiron 5.4 4a 12 IV 10 VD 3c CO : Flatirons : ... : Fourth Flatiron
The Fourth is probably the longest of the major Flatirons, extending nearly to the summit of Green Mountain. The formation, however, is actually broken into three smaller subflatirons, separated by gullies which are hidden from the normal view from town. The northernmost extension of the 2nd sub-Flatiron is actually Green Mountain Pinnacle. The route really isn't much fun, requires bushwhacking in the gullies between the subflatirons, and culminates in the most anti-climatic summit of the 5 m...[more]   Browse More Classics in CO

Photos of Fourth Flatiron Slideshow Add Photo
Lots of rock.
Lots of rock.
BH on west face of the Fourth Flatiron.
BH on west face of the Fourth Flatiron.
E face of 4th Flatiron from lower Skunk Canyon.
BETA PHOTO: E face of 4th Flatiron from lower Skunk Canyon.

Comments on Fourth Flatiron Add Comment
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By George Bell
From: Boulder, CO
May 9, 2002
I was looking up at the Flatirons today and I don't think the Fourth is any larger than the Third. It's rather subjective, of course, but the Third appears even longer than the Fourth, and also pretty wide if you count all the rock to it's left. The First is probably the largest Flatiron, due to it's width (perhaps surface area is the best measure to use?).
By Clint Locks
From: Boulder
Jul 2, 2009
Whether larger or smaller, it's definitely a different experience than the 3rd, so worth the effort at least once. Interesting belays on the first and second pitches.
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