Colorado River Headwaters Scenic and Historic Byway Colorado River Headwaters Scenic and Historic Byway, Granby Chamber of Commerce, Granby, CO 80446 Local: (970) 887-2311 Visit Website Overview Follows the Colorado River from Grand Lake to State Bridge. Related Articles 5 Lesser-Known Colorado Springs Mountains to Summit Where Can Colorado Visitors Consume Marijuana? 8 Tips for Safer Cannabis Consumption Staying on the Right Side of Marijuana Laws How to Dispose of Cannabis on Your Way Out of Colorado Hit Colorado's Trails Like a Pro With These Tips