Devils Thumb

Devils Thumb is a 5-mile trail in the Colorado Front Range near Boulder that offers mountain bikers a solid intermediate adventure through the scenic landscape of the 40.0°N 105.6°W region. Named for its distinctive geological feature, this trail provides riders with a good mix of terrain and elevation change over its length. Whether you're looking for a half-day ride or a warm-up for longer adventures, Devils Thumb delivers an engaging experience in one of Colorado's premier mountain biking destinations.