Double Clutch

Double Clutch is a historically significant sandstone boulder route situated in Boulder, Colorado. It is found within the iconic Flagstaff Mountain area, a major hub for early American bouldering. The location offers classic, gritty lines characteristic of Colorado's Front Range climbing scene.

Double Clutch is considered a highly demanding problem, traditionally graded at V9. It requires substantial upper body strength, precise footwork, and excellent technique to manage the dynamic moves. The V-rating system itself was pioneered in the US, making routes like this important testpieces for local climbers.

The route tests climbers' ability to manage difficult, sequential moves on sandstone, often involving powerful dynos or tense lock-offs. Because it is a sandstone boulder, friction is highly dependent on conditions, meaning it is best climbed in cool, dry weather. The crux involves navigating a steep, overhanging section with poor handholds.

The problem was established during the golden age of bouldering in Boulder, Colorado, though specific first-ascensionists of older, classic V9s in the area vary. It stands as a testament to the local climbing standard. The history of the area is deeply tied to legends like John Gill and Jim Erickson.