It’s the Ultimate Urban Tour of Denver with epic sites. Start and finish in Denver’s City Park. Run through Empower Stadium at Mile High – twice! Run through Denver Fire Station #1, along seven miles of rivers, lakes and bridges – including Sloan’s Lake. Race through eclectic neighborhoods, historic Lakewood, the bustle of Colfax Avenue, and downtown Denver – with views of the majestic Rocky Mountains! This is one for the bucket list! The Colfax Marathon is a Boston Marathon qualifier race.