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Boulder Island

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Boulder Island Rock Climbing 

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Location: 43.7991, -110.7276 View Map  Incorrect?
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Administrators: Mike Snyder, Kristine Hoffman (sitewide)
Submitted By: Fink Fink on Sep 17, 2009
You & This Area
Best climbs for YOU in this area
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Firing up the crack on the west side.


One of the best ways to spend a lazy afternoon climbing in Jackson, swim or paddle out to the island and enjoy some scenic toproping.

Scramble on top of the main boulder from the east side and set up your climbs off of several bolts on the west and northwest sides. There are a few cracks on top of the boulder that would be possible (with some creativity) to rig anchors from. Many excellent climbs from around 10- to 11+ are possible.

Note: As of Sep 2009, the pair of bolts off the northwest side were 1/4 inchers & rusted. Other set was solid

Getting There 

From the Leigh Lake parking area, follow the trail north towards Leigh Lake. After approximately 3/4 of a mile, follow signs toward the Leigh Lake Portage. From the shore of the lake, swim to the island approximately 50 yards away. The island is also quite clearly marked on the USGS topo.

Alternatively, launch a canoe/sea kayak from the same trailhead and paddle north on String Lake until you are forced to portage your boat ~200 yards to Leigh Lake. Paddle across to the same island...but why would you bother with that? Just carry a pool toy if you can't swim.

Climbing Season

Weather station 9.2 miles from here

3 Total Climbing Routes

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

Featured Route For Boulder Island
Rock Climbing Photo: West side:  Blue = 5.12+ Kehough: flexi flake, sma...

W. Side 5.11 6c+ 23 VIII- 23 E4 5c  Wyoming : Grand Teton National Park : Boulder Island

Photos of Boulder Island Slideshow Add Photo
Rock Climbing Photo: Route on the west side of the boulder. Crimpy with...
Route on the west side of the boulder. Crimpy with...
Rock Climbing Photo: Crimpin' up the west side
Crimpin' up the west side

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By Gee Double
Jun 13, 2014
Boulder Island: Routes- right to left on Steep S-NW side: Top ropes!

V5: S. Face; steep boulder problem, top rope (or pads,spotter), brush or broom for lip, jugs to small hanging corner to lip maneuver. 4.5 m
5.10: (5.11d SDS); common free solo; very steep, big holds, lip crux, classic., above talus.
5.13- Collins: WSW Hanging Arete, undercling, long move left, 1 bolt + small tree anchor. Slings.
5.12+ Kehough: flexi flake, small holds prow, classic. Cam directional from "Balck Dike"
5.11 Crack: distinct crux at 6m. finish in flare right with cam directional or left to "Black Dike".
5.10d Black Dike: Classic crimps up dark colored dike. "Best 5.10 (.11-) in the Tetons", 3 bolt anchor
5.12-: Arete': Classic prow, white stone, squat, crimp and arete rail, bolt anchor. 2 old bolt, 1 newer
5.11+: NW face, start arete or flexflake, hidden crimp 3/4 height, not as classic as Arete'...

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