Minutes from downtown Boulder, a wide variety of climbing types and beautiful scenery make Boulder Canyon a favorite for many locals to climb. The rock type is granite, smooth in places but for the most part highly textured. Easy to challenging sport climbs litter the canyon, and new development is still going on. Also, there are a number of moderate and classic trad lines, from the Elephant Buttresses up to Castle Rock and beyond.
Note, for organizational purposes, Upper Dream Canyon is listed separate from Boulder Canyon, despite being a side branch of Boulder Canyon.
The crags on the south side of the canyon receive little sun in the winter months, and often are quite chilly then. They are great for shady climbing in hotter weather, however. Most crags on the northern side of the canyon are climbable in the winter months, and quite hot to climb in the summer sun. Approach time for most climbs is in the 5-15 minute range, if not less.
Ice Climbing
There are a couple of areas in BC that form ice during the winter thanks to a leaky aqueduct. These flows forms just West of Castle Rock on the South side of the creek. Mainly shorter, easier lines, but up WI6 (in thin conditions) can be found.
Mileages / Crags
Here is a update-able list of approximate mileages (from the bottom) with associated crags:
From the low lands, go to Boulder. Canyon street (aka CO Hwy 119) runs east to west. Get on Canyon, drive west. Mileage distances for the crags are measured from the bridge that you cross on the right turn as you just get into the canyon. You can also walk/ride on a footpath that follows Boulder Creek to get to some of the rocks.
From the high lands, go to Nederland. Drive downhill on CO Hwy 119.
These closures protect a long-established golden eagle territory, including valuable alternate nest sites. Undisturbed access to alternate nest sites is important for birds of prey early in the nesting season, to give them a chance to use different nests during courtship and to select a site for the season free of human influence. Signs have been posted at key access points into the closed areas and closures will be in effect until July 31. See AccessFund for further details.
Also, please see news item regarding Security Risk crag access.
This was one of the most (in)famous 5.9 trad routes in Boulder Canyon - that is until it was upgraded to 10b in Rossiter's latest guide. The route begins about 50' right of the bolted route "Bolt Cola" behind a large talus block.P1. Head up a slab with occasional cracks to a large roof about 100' up. The crux tackles this roof directly via an overhanging corner with a very thin crack in the back. You can place good gear down low, but higher up...[more]
Does anyone know whats going on with raptor closures in Boulder Canyon this year? There are new yellow signs saying many crags like Blob, Happy Hour, Security etc are closed. Today there were lots of cars parked in normal parking, and a ranger truck. Just curious if anyone knows the details of the closures.......
Can anyone indentify this crag? CO119 from Nederland. A road winds around it with two small bridges to cross. The crack system on the right begins with a two bolt steep face.
Have the Boulder Canyon closures for 2008 been announced, yet? I have done some online searches, but I have not found any information.
By Leo Paik Administrator From: Westminster, Colorado Feb 5, 2008
From a user feedback mpecotte@fs.fed.us: "I wanted to share a press release from the Boulder Ranger District regarding implementing of seasonal raptor closures in Boulder Canyon, Boulder Colorado. Please read on, and pass the information on to your members and visitors. We hope you can help spread the word to protect golden eagle habitat during courtship, mating and fledging of young.
Forest Service Closes Areas in Boulder Canyon to Protect Wildlife
Boulder, February 1, 2008 – To protect nesting birds of prey, certain climbing areas on National Forest System lands in Boulder Canyon will be closed to all users beginning today, February 1. These closures protect a long-established golden eagle territory, including valuable alternate nest sites. Undisturbed access to alternate nest sites is important for birds of prey, especially early in the nesting season, to give them a chance to visit multiple nests during courtship and to select a site for the season, free of human influence.
The areas commonly known as “Eagle Rock,” “Blob Rock,” “Bitty Buttress,” and “Security Risk” will be closed to climbing and other access. The “Security Risk Area” closure for 2008 includes Upper and Lower Security Risk. Happy Hour, Bihedral, and Riviera remain open. These areas are located along State Highway 119 and approximately one and one-half miles east of Boulder Falls.
Signs will be posted at key access points into the closed areas. Closures are effective from February 1 through July 31. Volunteers and Forest Service personnel will monitor the areas, and some areas may be reopened prior to July 31. For the most current closure information, check signs in the vicinity, or visit the Boulder Ranger District web site at http://www.fs.fed.us/r2/arnf/recreation/rock-climbing/brd/in>>>>>.
Colorado Division of Wildlife (CDOW) biologists recommend protection of a quarter mile buffer zone around active and alternate nest sites for birds of prey. The Boulder Ranger District’s closures actually cover smaller areas around some nest sites, due to the topography and fragmented land ownership in the area. “We begin the Boulder Canyon closures on February 1 to protect these golden eagles during the important early nesting season and to be consistent with other local climbing area closures,” said Boulder District Ranger Christine Walsh. Ranger Walsh continues, “For three consecutive years, we have left Happy Hour, Bihedral, and Riviera open to allow access for winter and spring climbing. As long as compliance with the closed areas is not compromised, we anticipate continuing this in future seasons.”
The Forest Service continues to cooperate with the CDOW and Boulder County Nature Association (BCNA) to protect important nesting areas for birds of prey. CDOW and BCNA volunteers have monitored nesting birds of prey on National Forest lands in Boulder Canyon for many years, providing valuable data about nesting activity.
It is against federal and state law to disturb any nesting bird of prey. Please help protect wildlife by respecting all closures, immediately leaving if you should accidentally enter one, and urging other visitors to do the same. Please also be aware that the City of Boulder Open Space and Mountain Parks (303-441-3440) and Boulder County Parks and Open Space (303- 678-6200) also enforce closures to protect nesting birds of prey."
A chonological list of guidebooks covering Boulder Canyon:
1967 - High over Boulder: A Climber's and Hiker's Guide to Boulder, Colorado by Pat Ament 1970 - High over Boulder (2nd Ed) by Pat Ament 1976 - High over Boulder (3rd Ed) by Pat Ament 1980 - Rocky Heights: A Guide to Boulder Free Climbs by Jim Erickson 1981 - Boulder Topographics - A Pictoral Guide to Boulder Climbs by Richard Rossiter 1983 - Pictoral Guide to Boulder Climbs (2nd Ed) by Richard Rossiter 1984 - High over Boulder (4th Ed) by Pat Ament 1985 - Pictoral Guide to Boulder Climbs (3rd Ed) by Richard Rossiter 1986 - Pictoral Guide to Boulder Climbs (4th Ed) by Richard Rossiter 1988 - Boulder Climbs North by Richard Rossiter 1992 - Best of Boulder Climbs (2nd Ed) by Richard Rossiter 1995 - High over Boulder (5th Ed) by Pat Ament and Cleve McCarty 1995 - Rock Climbing Colorado by Stewart Green 1996 - Boulder Sport Climber's Supplement Guide by Mark Rolofson 1996 - Best of Boulder Climbs (3rd Ed) by Richard Rossiter 1997 - Classic Climbs 02: Upper Dream Canyon by Richard Rossiter 1998 - Classic Boulder Climbs by Fred Knapp and Mike Stevens 1998 - Rock Climbing Boulder Canyon by Richard Rossiter 2000 - Boulder Canyon Sport & Adventure Climber's Guide by Mark Rolofson 2000 - Best of Boulder Climbs (4th Ed) by Richard Rossiter 2002 - Serious Play: A Guide to Traditional Front Range Classics 5.2-5.9 by Steve Dieckhoff 2005 - Boulder Canyon Sport & Adventure Climber's Guide Volume 2: The Upper Canyon by Mark Rolofson 2006 - Boulder Canyon Sport & Adventure Climber's Guide Volume 1: Lower Narrows to Dream Canyon by Mark Rolofson
Mark Rolofson's 1993 Boulder Sport Climber's Guide includes, among many others, a section on Boulder Canyon: "Featuring a new selection of sport climbs from 5.11 to 5.13, not previously documented". Cover is a b&w picture of Mark climbing on the Fang in SSV.
Mark Rologson's 1995 Boulder Sport Climber's Guide is an update that greatly expands the Boulder Canyon section: "Introducing a new and growing selection of sport climbs from 5.9 to 5.13c on featured granite." Cover is a color picture of Dianne Barrow climbing at Security Risk.
Fred Knapp's Front Range Topropes also includes Boulder Canyon. I have his first ed, but he doesn't list a year on the copyright page.
Great job on the list, James. A few other guides that also covered Boulder Canyon are Dave Dornan's guide: Rock Climbing Guide to the Boulder Colorado Area, 1961 and 1964 and 5.10 by Pat Ament and Jim Erickson 1972?.
By Ron Olsen Administrator From: Boulder, CO Jul 24, 2008
Tonnere Tower is a good summer crag. Sport Land, on the east face, is in full shade after 2pm this time of year. Treasure Wall, The Garden, and Creekside, on the north face, are in shade for much of the day. The routes at Creekside are right next to Boulder Creek, and get cool breezes off the creek as well.
"What's the steepest sector in Boulder Canyon that gets a lot of sun? I'm taking a lot of falls for a science project and don't want to get scraped up."
You could probably go jump off the steeper routes at Stepping Stones -- sun these days from about noon to four. Pinche Guey is the steepest one there. Easter Rock is steep and clean falls, but not much sun.
The steepest section of Boulder Canyon that gets a lot of sun is Bitty Buttress (The Lorax). Your best bet is to go up to the final crux on the Lorax and jump off -- massive air...probably the steepest route in Bo-Can.
Boulder Canyon
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