REI Community
Boulder Canyon - Ice

Select Area...
Boulder Falls - Ice 
Castle Rock/Lower Falls Ice 
Scruffy Crag 
Upper Falls - Ice 
Vampire/Black Widow Slab - Ice 

Boulder Canyon - Ice Rock Climbing 

Photos:  Recent | Best | Popular
Elevation: 7,000'
Location: 39.98116, -105.45459 View Map  Incorrect?
Page Views: 22,004
Administrators: Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac, Kristine Hoffman (sitewide)
Submitted By: Leo Paik on Mar 19, 2006
You & This Area
Best climbs for YOU in this area
Your opinion of this PAGE:    [0 people like this page.]
BH on nice blue ice in Boulder Canyon.


This is an old stomping grounds for ice climbers cutting their teeth. Ice climbing here dates back to the 1950s or 60s. Water dribbled in from a variety of sources, including leaks in an aqueduct, springs, and for a period ice farming. This was once a fledgling ice park. Now, a struggling ice area with a few glimmers of hope.

Ice climbers have climbed routes along this little canyon including near the mouth of the canyon (private property), near Cob Rock?, Lower Boulder Falls, Vampire Rock, Black Widow Rock, assortment low-angle flows, the area S of Castle Rock, and a few areas upstream from Castle Rock. Due to various reasons, the ice farming stopped, and the traditional leaks (mostly repaired) of the aqueduct and low-angle spring flows are what remain of the ice opportunities in the canyon.

So, if you're looking for some low-end to moderate, nearly-roadside ice, you may find something here to climb during cold months like late November to late March.

Remember, this is a limited resource in an area over-represented with climbers, so please respect each other and the ice & rock. For you mixed aficienados, please refrain from dry tooling on established Boulder Canyon rock routes. In the past, this has led to conflicts. Picks are meant to penetrate ice & hook rock, not penetrate skulls. Have fun!

Getting There 

This canyon lies West of Boulder, a small, climber-rich community Northwest of Denver. From Denver, head Northwest on US 36 to Boulder. At CO Hwy 119, aka Canyon, go West and enter the canyon. Keep your eyes peeled for ice. From Nederland and along the Peak to Peak, head down CO Hwy 119 East towards Boulder.

It is probably not be worth the drive if you are coming from areas further afield until/unless the ice farming is allowed to resume.

Please park in legal sites so as not to incite the wrath of CDOT. Remember, CDOT thinks of some of these pullouts as their territory.


Please carefully check the regulations at the particular ice venues before permanently altering the rock. The canyon consists of a complex gridwork of different landowners. Each landowner may have different regulations. Some have even posted them on site. This is important for maintaining good relations and climber access. Thanks.

Climbing Season

Weather station 2.4 miles from here

22 Total Climbing Routes

['4 Stars',2],['3 Stars',3],['2 Stars',13],['1 Star',4],['Bomb',0]

Classic Climbing Routes in Boulder Canyon - Ice

Mountain Project's determination of the classic, most popular, highest rated climbing routes for Boulder Canyon - Ice:
The Pencil aka Candlestick   WI4-5     Trad, Ice, 1 pitch, 50'   Upper Falls - Ice
Master of Puppets   M8-9 R     Trad, TR, Mixed, 1 pitch, 70'   Upper Falls - Ice
Ouray for Boulder   WI4 M3     Trad, Mixed, Ice, 1 pitch   Castle Rock/Lower Falls Ice
Blame James   WI3+     Trad, Ice   Castle Rock/Lower Falls Ice
The Bouldering Area   WI2-3     Trad, Ice   Castle Rock/Lower Falls Ice
Cheap Thrills   WI4+     Trad, Ice, 1 pitch, 45'   Upper Falls - Ice
Browse More Rock Climbing Classics in Boulder Canyon - Ice

Featured Route For Boulder Canyon - Ice
Rock Climbing Photo:

Black Widow Ice WI4-5 M3-4  Colorado : CO Ice & Mixed : ... : Vampire/Black Widow Slab - ...
During the winters of 1997-8, a vision of ice draped down granite faces became a reality. Oh, what creations! Left to right. Meow Mix, WI3 - top of the Vampire/Black Widow Gully (not pictured here). Hit and Run, WI4-5 (not pictured here). Mellow Yellow, WI4. Book of Secrets WI4 M3 - 2 pitch, left-facing corner (not pictured here). Brown Recluse, WI4+ M3 -2-3 pitch on the Black Widow Slab proper. Virtual Reality, WI5 M4 - thin start to fatter ice above. Hector D...[more]   Browse More Classics in Colorado

Photos of Boulder Canyon - Ice Slideshow Add Photo
Rock Climbing Photo:

Comments on Boulder Canyon - Ice Add Comment
Show which comments
Comments displayed oldest to newestSkip Ahead to the Most Recent Dated May 7, 2009
By Bob Berger
From: Boulder, CO
Oct 15, 2001
Saw and article in the Camera last week that mentioned that the aqueduct in Boulder Canyon was going to be shut-down for repairs and that the work should take two months.

I'm kinda new, but won't this dramatically affect the ice in Boulder Canyon? Eds. Yep.
By Leo Paik
From: Westminster, Colorado
Nov 28, 2001
A report on the pipeline from an ice climber: "I talked to somebody today at the Coop in Ned that is working on repairing the pipeline! This week they fixed all but one leak, so there may be no ice in Boulder Canyon anymore. They're working on the last leak."
By Malcolm Daly
From: Boulder, CO
Dec 5, 2001
On a drive through Boulder Canyon I spotted ice. The lower falls, left, are in, but not huge, and there is a bit forming up in the center and right slab. At the upper falls there are 2-3 lines possible, not thick and huge, but climbable. Talked to Steve Pomerance yesterday and got an update about the water situation. The ditch is fixed so not much in the way of artificial flows, but natural ice (oh my god!) does form from streamflows and melting. Everything seems to be lined up to farm ice there but the Forest Circus thinks a study needs to be made and possibly a concession permit issued. Clearly, this will take many bureaucratic years. Our friendly climbing congressman, Mark Udall, has offered to try to speed things up. Yeah! Mark. Don't forget to donate to his campaign.

The road to the Hesse Chimney is still drivable w/ 4WD but there's no ice. According to reports it's good when it's dry, but I don't see the point.
By Anonymous Coward
Mar 1, 2002
Did the Middle Flow late this afternoon. Cold and brittle. A layer of snow crust had to be hacked out to get to the better ice. The lower angle section after the short vertical part has about 6-10" of snow on top of it. Not to bad if your going this weekend, probably have to clear some snow though, helpful if one of your tools has an adze. Enjoy!
By Jon Sargent
Sep 23, 2002
I heard a rumor that there might be some "farming" going on in the canyon this winter. Any idea if there is any truth to the rumors...??
By Furthermore
Nov 6, 2002
I took a look this last weekend, and I didn't see any Ice forming yet. The lower falls appeared to have nothing, and the upper falls had a little, but im sure what was there has melted out.
By Furthermore
Nov 6, 2002
I took a look this last weekend, and I didn't see any Ice forming yet. The lower falls appeared to have nothing, and the upper falls had a little, but im sure what was there has melted out.
By Anonymous Coward
Nov 10, 2002
Boulder Canyon Ice 11/10/2: There is a bit of ice with some short vertical pillars on the left most of the traditional flows at the lower ice falls. It peters out to dribbles after about 80 feet. Center and Right are wet rock. There is a bit of ice at the upper falls; however, beware, it's totally detached and won't take too much abuse. Best to TR delicately. At least there is water flowing to build up more ice in the future. The creek is not much of a deterrent.
By Scott Kozub
Nov 12, 2002
Boulder Canyon is growing but needs some time to build up. Climbers need to hold off a little while longer so this can grow. If you must climb, please use caution while climbing here because the ice is not completely bonded to the rock and could break. Would suggest TR vs leading.
By Anonymous Coward
Dec 30, 2002
Did right and left lower falls, (okay my partner led them) in Boulder Canyon on Dec. 28. Nice, a bit thin, but had the place to ourselves.

Cruised up to upper Boulder Canyon stuff, nice and steep, in pretty well considering it was 60 degrees in town. Parnter led right flow for fun, TR'd the middle column. Not bad if you aren't too picky.
By Michael Junk
Jan 8, 2003
I climbing just west of Cob Rock January 2, 2003 and there are a few good climbs off the road but they are all narrow. If you trek back into the trees to the left of them you find some real solid ice and few real wide falls.
By Furthermore
Jan 9, 2003
Upper Falls are developed. While the lower falls look thin, and not worthwhile. These last couple of warm days are not helping the conditions.
By Furthermore
Feb 2, 2003
From seeing the ice conditions in the canyon a week apart, I will be surprised if the lower falls will even be there in 2 weeks. The upper falls are starting to melt out, and are very wet.
By Anonymous Coward
Feb 25, 2003
Checked out the ice at Castle Rock on 2/22/03, first climbs you come to don't really exist this year. The main flow is short, missing a lot of ice and all hacked up. The second area has one pitch of so so ice. Drove to the nest turn off, ice area and there were six cars parked there. Didn't go up but in between the many top ropes I saw good looking ice. Slimmest I've seen in the last 5 years.

By William McGehee
From: Choctaw, OK
Dec 14, 2003
Ice is moderately in on Lower Falls and mixed conditions at Upper. TR conditions thus far. Wait a while. It'll be there!
By Doug Barker
From: Centennial, CO
May 5, 2009
Why can't there be decent ice in Boulder Canyon for 2010? I'm not expecting it to be like Vail or Ouray, but if it's cold enough, shouldn't there be something local that we can kick and pick? Help me understand what the issues are with this controversial pipe....
By Bruce Pech
May 7, 2009
The City and interested climbers attempted to negotiate releases from the aqueduct at the Lower Falls a few years ago. Liability and property ownership issues exist and the idea was shelved. As far as I know, neither climbers nor the City have revisited the matter.

Mountain Project

The Definitive Climbing Resource

MTB Project

Next Generation MTB Trail Maps

Powder Project

Backcountry Ski Maps & Secret Stashes
FREE Stickers · Gyms · RSS · School of Rock · Contact · About