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OK Corner: A Direct Trad Classic in Boulder’s Flatirons

Boulder, Colorado United States
finger crack
slab
right-facing dihedral
single-pitch
traditional protection
moderate difficulty
Length: 60 ft
Type: Trad
Stars
Pitches
1
Location
OK Corner
Aspect
South Facing

Overview

"OK Corner invites climbers to test their balance and gear placement on a clean, moderate slab and right-facing dihedral just minutes from Boulder. This single-pitch trad line offers a rewarding blend of technique and approachable challenge."

OK Corner: A Direct Trad Classic in Boulder’s Flatirons

The OK Corner offers a straightforward taste of trad climbing at the Flatirons near Boulder, Colorado, where the intersection of sandstone and sky forms a playground for those seeking moderate slab and clean finger cracks. This single-pitch climb, stretching 60 feet, invites climbers to read the rock with precision—starting on a slab that tests your balance before moving into a right-facing dihedral that demands smart footwork and steady placement of gear. The rock’s texture is gritty yet solid, offering reassurance underfoot and variable handholds that reward patience and technique.

Approaching from Ridge 3 on Angel's Way, you encounter the quieter side of Skunk Canyon, a landscape of open plains curving gently into the Flatirons’ broader ridges. Light filters through the daytime clouds, casting subtle shadows that highlight the subtle textures of the slab. Although the climb itself is brief, it pulses with a rhythmic challenge—nothing overly complex, but a perfect opportunity to sharpen skills and enjoy the surrounding wilderness uninterrupted by crowds.

Protection is straightforward but requires a solid rack of small to medium cams to cover the delicate corner sections safely. The placement feels secure if you slow down and test your gear carefully; this climb rewards methodical moves rather than wild reaches. The 5.9- rating sets a respectful tone: it’s approachable for intermediate climbers aiming to polish their crack climbing or slab technique, but it also doesn’t shy away from testing balance and mental focus.

The area’s proximity to Boulder makes access quick and convenient, with the approach trail well-maintained yet embodying the natural grit of Colorado’s outdoor character. Keep an eye on your timing, as the wall’s aspect catches early sun, offering ideal conditions through spring and fall mornings. Descending involves a simple walk-off that eases any concerns about complicated rappels or uncertain terrain underfoot.

Whether combined with nearby routes like the more adventurous Electroshock to the right or enjoyed as a standalone introduction, OK Corner exemplifies the thrive-it-yourself spirit of Flatirons climbing. It’s a spot where the rock’s honest features guide your rhythm, and the surrounding open land keeps your focus sharp and senses engaged—perfect for those hungry to blend skill-building with a day’s worth of Colorado’s wild edge.

Climber Safety

Watch your foot placements on the slab, as smooth sandstone can be slippery if damp or dusty. Gear placements require attention—small cams need to be well-seated and tested, especially in the corner section where protection options thin slightly.

Route Details

TypeTrad
Pitches1
Length60 feet

Local Tips

Start your climb early to take advantage of the morning sun on the face.

Bring a standard single rack with a focus on small cams for secure placements.

Approach via the Ridge 3 trailhead—it’s well-marked and under an hour from Boulder.

Pair your climb with Electroshock for an extended day in the Flatirons.

Route Rating

Difficulty
5.9-
Quality
Consensus:The 5.9- rating presents a moderate challenge ideally suited for climbers comfortable with slab and crack techniques. The grade feels true to form, with the crux resting largely in smooth slab balance and careful gear placements rather than aggressive moves. Compared to other Boulder routes, OK Corner stands out as a solid introduction to trad on Flatirons sandstone without overwhelming technical demands.

Gear Requirements

A rack focused on small to medium cams works best here, supporting placements within the right-facing corner and slab features. No bolts; all protection must be placed by the climber.

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Tags

finger crack
slab
right-facing dihedral
single-pitch
traditional protection
moderate difficulty