Continue with onX Maps
Sign in with Facebook
Boulder Canyon Boulder (AKA Graham Boulder) Bouldering
Routes in Boulder Canyon Boulder (AKA Graham Boulder)
|
Crosstown Traverse V2- 5+ |
|
|
Fields Face V6 7A |
|
|
Left Graham Arete V11 8A |
|
|
Left Graham Arete (stand) V4-5 6B+ |
|
|
North Face Lunge V2 5+ |
|
|
North Face Traverse V1 5 |
|
|
Right Graham Arete V9 7C |
|
|
Warm-up Corner V3- 6A |
| Unsorted Routes: | |
Order Wrong?
Sort Routes
Use onX Backcountry to explore the terrain in 3D, view recent satellite imagery, and more.
Now available in onX Backcountry Mobile apps! For more information see this post.
| Elevation: | 6,806 ft | 2,074 m |
| GPS: |
40.00358, -105.40033 Google Map · Climbing Area Map |
|
| Page Views: | 30,640 total · 109/month | |
| Shared By: | Peter Beal on Oct 11, 2003 · Updates | |
| Admins: | Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac, Tyler KC |
Access Issue: Seasonal raptor closures for 2026 - Bitty Buttress, Blob, East Blob, Security Risk - open. Eagle Rock, Vampire, Black Widow Slab - closed.
Details
Per *Items added 12/30 Closet clean out. Apparel, approach shoe's, (BD, prana, scarpa, REI): Blob, Bitty, and Security Risk have been reopened on 4/21/26.
The USFS closed Blob, E Blob, Security, Bitty, Vampire, and Black Widow through 7/31/26.
5/19/25 Eagle Rock opened. 3/14/25: Bitty Buttress, Blob, & SR reopened.
2/3/25. Bitty Buttress, Blob, Eagle Rock &, Security Risk closed for raptors.
FS (3/27/24): Eagle Rock & Security Risk are now open!
2/1/24: W. McCurry: USFS annual closures in Boulder Canyon as of 2/1/24 - Blob Rock, Bitty Buttress, Eagle Rock, Security Risk.
W. McCurry: 2/10/23 Blob, Bitty Buttress, & Security Risk opened. Eagle Rock is closed - info: fs.usda.gov/detail/arp/news….
W. McCurry, NFS, Arap./Roo. NF: USFS began annual closures in BC 2/1/23. The closures: Eagle, Blob, Bitty Buttress, & Security.
Through 7/31/23, the closures protect golden eagle nesting territory. Happy Hour, Bihedral & Riviera will remain open as long as visitors stay out of the closed areas.
The Boulder Ranger District with BCC monitors nesting progress & informs climbers re: giving eagles space to raise young.
Fed. & state laws prohibit disturbing any nesting bird of prey. Visitors help protect wildlife by respecting closures. Signs are posted at key access pts into the closed areas. Closure info: fs.usda.gov/goto/arp/eagles.
K. Armstrong, Public Affairs Specialist, Nat'l Forest Service: as of 6/8/21: BC areas reopen after unsuccessful nesting.
K. Armstrong, NF Ranger 7/29/20: following a 5 mo. closure to protect nesting eagles, the Roosevelt NF reopened Eagle Rock.
“The BC eagles successfully raised 1 strong & healthy eaglet this year,” wildlife biologist Aurelia DeNasha, USDA FS. “2 chicks hatched initially, only 1 survived to fledge, which isn’t uncommon in birds of prey.”
Visits to the nest did not reveal the exact cause of death of the 2nd chick, but climber cooperation with closures are crucial to the eagles.
“Golden eagle pairs are most susceptible to disturbance when choosing a nest. These closures allow the birds to pick the best site for survival without impact of other factors, such as human presence. Once chosen, nest sites stays closed until the eagles fledge in late July,” said DeNasha.
After the eagles’ site selection was made, unused areas opened in Apr.
The annual nesting closures include popular rock climbing spots at Eagle, Blob, Bitty Buttress, & Security.
Through 7/31/20, the closures protect a long-established golden eagle nesting territory. Happy Hour, Bihedral & Riviera remain open as long as visitors stay out of the closed areas.
It is against federal & state law to disturb any nesting bird of prey. Only employees, volunteers, & wildlife professionals under an agreement with the FS enter nesting areas for monitoring purposes. This is for the integrity of nest & the safety of the eagles, those conducting surveys, & the public. Visitors help protect wildlife by respecting all closures & leaving immediately if you should accidentally enter one.
For the most current closure information, check signs in the areas, call the Boulder Ranger District office @ 303-541-2500, or visit local climbing websites or fs.usda.gov/recmain/arp/rec….
4/21/20, Blob Rock, East Blob Rock, Bitty Buttress, & Security Risk are open. Eagle Rock stays closed until 7/31/2020 confirmed with Matt Henry, Rec Prog Mgr, FS.
K. Armstrong, FS Pub Aff, katherine.armstrong@usda.gov, 970-222-7607: 3/20/19, Blob, East Blob, Bitty Buttress, & Security are open. Eagle stays closed to climbing & other activities through 7/31/19.
See - fs.usda.gov/recmain/arp/rec….
Perennial notice:
Eagle, Blob, Bitty Buttress, & Security will close 2/1 - 7/31 for nesting. Depending on updated information, the closure time can be shortened/lengthened.
Each year, BC raptor nesting area closures are in effect starting 2/1 through 7/31 at Eagle, Security, Blob, & Bitty Buttress. The area is monitored & closures are periodically lifted early (due to no active nest, nest site failure, or early fledging). This monitoring program is a partnership with the FS Boulder Ranger District, BCC, & Audubon Society. Check back periodically during times of closure for updates. More info at fs.usda.gov/recarea/arp/rec….
The USFS closed Blob, E Blob, Security, Bitty, Vampire, and Black Widow through 7/31/26.
5/19/25 Eagle Rock opened. 3/14/25: Bitty Buttress, Blob, & SR reopened.
2/3/25. Bitty Buttress, Blob, Eagle Rock &, Security Risk closed for raptors.
FS (3/27/24): Eagle Rock & Security Risk are now open!
2/1/24: W. McCurry: USFS annual closures in Boulder Canyon as of 2/1/24 - Blob Rock, Bitty Buttress, Eagle Rock, Security Risk.
W. McCurry: 2/10/23 Blob, Bitty Buttress, & Security Risk opened. Eagle Rock is closed - info: fs.usda.gov/detail/arp/news….
W. McCurry, NFS, Arap./Roo. NF: USFS began annual closures in BC 2/1/23. The closures: Eagle, Blob, Bitty Buttress, & Security.
Through 7/31/23, the closures protect golden eagle nesting territory. Happy Hour, Bihedral & Riviera will remain open as long as visitors stay out of the closed areas.
The Boulder Ranger District with BCC monitors nesting progress & informs climbers re: giving eagles space to raise young.
Fed. & state laws prohibit disturbing any nesting bird of prey. Visitors help protect wildlife by respecting closures. Signs are posted at key access pts into the closed areas. Closure info: fs.usda.gov/goto/arp/eagles.
K. Armstrong, Public Affairs Specialist, Nat'l Forest Service: as of 6/8/21: BC areas reopen after unsuccessful nesting.
K. Armstrong, NF Ranger 7/29/20: following a 5 mo. closure to protect nesting eagles, the Roosevelt NF reopened Eagle Rock.
“The BC eagles successfully raised 1 strong & healthy eaglet this year,” wildlife biologist Aurelia DeNasha, USDA FS. “2 chicks hatched initially, only 1 survived to fledge, which isn’t uncommon in birds of prey.”
Visits to the nest did not reveal the exact cause of death of the 2nd chick, but climber cooperation with closures are crucial to the eagles.
“Golden eagle pairs are most susceptible to disturbance when choosing a nest. These closures allow the birds to pick the best site for survival without impact of other factors, such as human presence. Once chosen, nest sites stays closed until the eagles fledge in late July,” said DeNasha.
After the eagles’ site selection was made, unused areas opened in Apr.
The annual nesting closures include popular rock climbing spots at Eagle, Blob, Bitty Buttress, & Security.
Through 7/31/20, the closures protect a long-established golden eagle nesting territory. Happy Hour, Bihedral & Riviera remain open as long as visitors stay out of the closed areas.
It is against federal & state law to disturb any nesting bird of prey. Only employees, volunteers, & wildlife professionals under an agreement with the FS enter nesting areas for monitoring purposes. This is for the integrity of nest & the safety of the eagles, those conducting surveys, & the public. Visitors help protect wildlife by respecting all closures & leaving immediately if you should accidentally enter one.
For the most current closure information, check signs in the areas, call the Boulder Ranger District office @ 303-541-2500, or visit local climbing websites or fs.usda.gov/recmain/arp/rec….
4/21/20, Blob Rock, East Blob Rock, Bitty Buttress, & Security Risk are open. Eagle Rock stays closed until 7/31/2020 confirmed with Matt Henry, Rec Prog Mgr, FS.
K. Armstrong, FS Pub Aff, katherine.armstrong@usda.gov, 970-222-7607: 3/20/19, Blob, East Blob, Bitty Buttress, & Security are open. Eagle stays closed to climbing & other activities through 7/31/19.
See - fs.usda.gov/recmain/arp/rec….
Perennial notice:
Eagle, Blob, Bitty Buttress, & Security will close 2/1 - 7/31 for nesting. Depending on updated information, the closure time can be shortened/lengthened.
Each year, BC raptor nesting area closures are in effect starting 2/1 through 7/31 at Eagle, Security, Blob, & Bitty Buttress. The area is monitored & closures are periodically lifted early (due to no active nest, nest site failure, or early fledging). This monitoring program is a partnership with the FS Boulder Ranger District, BCC, & Audubon Society. Check back periodically during times of closure for updates. More info at fs.usda.gov/recarea/arp/rec….
Description
Yes, there is an actual boulder in Boulder Canyon. It is shaded, and it has bullet rock and at least three hard problems. It isn't very big, but it's well worth a visit. The major drawback is crossing the river, but bouldering season usually means the water is low.
A. Left Graham Arete, V11.
B. Right Graham Arete, V10.
C. Warm-up Corner, V2.
Getting There
Drive west on CO 119 7.2 miles from the intersection of Arapahoe and Canyon to a pullout near a cliff called the Inca Stone. Don't go past the sign reading "Boulder Falls 1000 feet. Look directly across the river for a low boulder in the trees. Crossing the river might be easier upstream, near another pullout on the south side of the road. There are four, maybe five distinct problems. Most people will want to try the Graham aretes. The rounded egg-like one just left of a short corner is supposed to be V10. The other arete just left of a steep clean wall is V11. Whatever the grade, both look a lot easier than they are.
Eds. The GPS coordinates are not yet accurate.
Classic Climbing Routes at Boulder Canyon Boulder (AKA Graham Boulder)
Mountain Project's determination of the classic, most popular, highest rated climbing routes in this area.
Sun Angles Details:
Weather Averages
|
High
|
Low
|
|
Precip
|
Days w Precip
|
Prime Climbing Season
| J | F | M | A | M | J | J | A | S | O | N | D |
| J | F | M | A | M | J | J | A | S | O | N | D |
Photos
All Photos Within Boulder Canyon Boulder (AKA Graham Boulder)
Most Popular · Newest · RandomMore About Boulder Canyon Boulder (AKA Graham Boulder)
Printer-FriendlyWhat's New
1 Comment