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Routes in Poison Oak Boulder Area

5.10 Face S 5.10a 6a 18 VI+ 18 E1 5a
Airplane Crack T,TR 5.10b 6a+ 19 VII- 19 E2 5b
Atom Ant TR 5.11a 6c 22 VII+ 22 E3 5c
Bad Boys from Detroit TR 5.11 6c+ 23 VIII- 23 E4 5c
Big Grunt TR 5.9+ 5c 17 VI 17 E1 5a
Big Squeak T 5.10a 6a 18 VI+ 18 E1 5a
Blasted Rock 3 - Center V5 6C
Blue Collar V1 5
Cast of a Thousand Stones TR 5.11c 6c+ 24 VIII- 24 E4 6a
Cool Jerk S 5.12c 7b+ 27 IX- 27 E6 6b
Deport Jonny (aka Jonny Go Home) TR 5.11b/c 6c+ 23 VIII- 24 E4 6a
Deport Jonny Forever TR 5.12a 7a+ 25 VIII+ 25 E5 6a
Double Scoop TR 5.10a 6a 18 VI+ 18 E1 5a
Elsa's Crack T,TR 5.7 5a 15 V+ 13 MVS 4b
Eppy Birthday TR 5.11a 6c 22 VII+ 22 E3 5c
Fade to Black TR 5.12c 7b+ 27 IX- 27 E6 6b
Go With The Flow TR 5.11c 6c+ 24 VIII- 24 E4 6a
Golden Medallion V2 5+
Hairdo S 5.12c/d 7c 28 IX 28 E6 6b
Hamburger Crack T 5.9+ 5c 17 VI 17 E1 5a V0 4
High on the Hog S 5.12a 7a+ 25 VIII+ 25 E5 6a PG13
Hollywood Shot T A3
Laker Girls TR 5.12c 7b+ 27 IX- 27 E6 6b
Laying Down On The Job T 5.10+ 6b+ 21 VII+ 20 E3 5b
Left of the Tree 5.10 6b 20 VII- 19 E2 5b V0+ 4+
Monkey Crack T,TR 5.10c 6b 20 VII 20 E2 5b
Poison Oak Crack T 5.7 5a 15 V+ 13 MVS 4b
Right of the Tree 5.8+ 5b 16 VI- 15 HVS 4c V0- 4-
Skid Row V3 6A
Slap You Silly TR 5.12b 7b 26 VIII+ 26 E5 6b
Starving In Stereo T,TR 5.12a 7a+ 25 VIII+ 25 E5 6a
Welcome to Rubidoux TR 5.13a 7c+ 29 IX+ 29 E6 6c
Werner's Wish TR 5.11b 6c 23 VIII- 23 E3 5c
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Type: TR, 30 ft
FA: unknown
Page Views: 8,516 total · 60/month
Shared By: Adam Stackhouse on Apr 5, 2007
Admins: Marc Kajut, M. Morley, Adam Stackhouse, Salamanizer suchoski, Justin Johnsen, Vicki Schwantes

You & This Route

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Access Issue: Current San Diego County Advisories Details


Big Grunt starts at the bottom of the obvious split in this large boulder (foreground) which sits atop Lunch Rock. A squeeze chimney start leads you to easier chimneying and eventually to the top.
Galloway, NJ
G.McCay   Galloway, NJ
If you ever listen to someone start this problem you'll understand why it has it's name. Those with large pectoral muscles are at a disadvantage. This is a fairly safe route to third class with a downclimb off the backside. Apr 5, 2007
Peter Minearo
San Diego, California
Peter Minearo   San Diego, California
Are there bolts at the top?

If not, what type of gear would one need to set top rope? Jun 17, 2014
Ocalslay Onlyyay
Not That Into Climbing
Ocalslay Onlyyay   Not That Into Climbing
Peter, there are bolts and links (was there last night,) but it might be an awkward TR. Not sure, probably belay from above would be best as well. Sep 22, 2014
Sierra Knott
San Diego, California
Sierra Knott   San Diego, California
Amazing classic! Starts as overhung offwidth to squeeze chimney and gets wider as you go up to chimney then turns to a weird slab chimney combo once you hit the hard angle at the top. Loved every second of it. We did it first try and as a free solo. On-site is doable but it's good to know some beta for safety reasons near the top. No rope necessary for me and my offwidthing crew. Although we didn't personally see a need for a rope, I wouldn't advise noobs to jump inside a 30+ ft chimney without a TR since the chance of serious injury is inevitable if you slip once inside or can't hang in the wide. Fairly difficult start for climbers who don't know good offwidth technique. Knowing how to take a rest in a decent froggy leg with butt to ankle jam is super helpful. When you get to the top, don't traverse too far right over the wide gap before you step over to top out. There's a small dark knobby crimp you can grab on to help pull yourself over. "Downclimb" is in the back. Hang down off a square left hand crimp to lower yourself onto a pile of wobbly stacked rocks. Don't just drop down. They aren't that stable. It's best to have someone down there stabilizing the downclimb "stairs" and spotting your descent. Happy grunting! Apr 20, 2015
Stein Lundby  
In my opinion probably the best climb at Mt Woodson.

There is a descent (let yourself drop down onto a pile of rocks), and a down-climb (down-climb the giant crack, near the back). To me, that down-climb is a pleasure that is not to be missed. Aug 13, 2015
One of the most beautiful climbs in Woodson. Get good at the grunt and your arm bars will be perfect for onsighting the crucible.

I call it a 5.10a because thats what the Kennedy book said and it was tricky to get into the crack.

I agree that its an awkward TR since wearing a harness would be awkward.

When you get out of the crack you end up on the left side. I felt sort of nervous jumping over to get back onto the right for the downclimb.

Not for the claustrophobic Jul 17, 2017
My first time climbing Big Grunt, I topped out only to discover the pile of rocks on the descent had been knocked over leaving a big drop and a jumble of ankle breakers. I called down to my fried to come re-build the pile. Shortly after he started a rattlesnake came by and decided to set up at the base of the unfinished pile. It didn't seem to receptive to our attempts to shoe it away. Great climb and a pretty unique "walk off" ha! Jan 13, 2018

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