Hike Doggie Flatirons will give dogs in Boulder, Broomfield, Lafayette, Louisville, Superior, Erie and Arvada access to ...

For information about Flatiron trails, visit the City of Boulder website ... you can still take in the Flatirons from one of the area's hiking trails – recent visitors said there's a trail ...

These jaw-dropping rock walls flanking Green Mountain have become the symbol of the city, with many Boulder businesses ... still take in the Flatirons from one of the area's hiking trails ...

Participants must be able to hike about three miles on variable terrain. Celebrate the start of longer days and enjoy a beautiful sunset over the Flatirons! Participants will hike 3-5 miles round-trip ...