Backed by the iconic Flatirons and home to the University of Colorado, Boulder ranks among America's most fit and educated cities. The outdoor culture here is real—people actually do hike before work and bike to the office.
Pearl Street Mall anchors downtown with pedestrian-only shopping, street performers, and restaurants. The dining scene punches above its weight, with everything from farm-to-table fine dining to legendary breakfast spots.
Boulder sits 30 miles northwest of Denver, making it an easy day trip or a base for exploring Rocky Mountain National Park (45 minutes away). The Peak-to-Peak Highway offers one of Colorado's most scenic drives.