Alli Fronzaglia
Alli Fronzaglia is a hiking guide, naturalist, and community volunteer. Originally from New England, she and her family have settled down in Boulder for the long haul. When she's not hiking or running on Boulder's trails, Alli is hitting the water with her standup paddleboard. She writes to inspire others to get outside and play. Alli serves on the board of the PLAY Boulder Foundation and she's the co-founder of Boulder Hiker Chicks.
82 articles on Your Boulder
4 Best Winter Hikes in Boulder
Winter is a wild and wonderful season in Boulder, starting as early as October and ending as late as May. During the months in between, we’ll experience every k...
A Guide to the Boulder’s Absolute Best Wildflowers Hikes
Do snow showers bring wildflowers? It would seem so! It’s been a particularly wild spring here in Boulder. It feels as though we’ve experienced every kind of we...
Epic Boulder Hiking: The 7 Summits Challenge
In recent years, the Boulder 5-Peak Traverse (also called the Skyline Traverse) has become increasingly popular as the ultimate backyard trail challenge. What w...
Boulder Hike of the Month: Viewpoint Trail
Boulder is home to more than 35 trailheads and 150 miles of trails. Even with millions of open space visitors per year, there’s no reason for anyone to battle c...
3 Haunted Hikes in Boulder
Boulderites enjoy taking things to the next level and this includes celebrating Halloween. From the Munchkin Masquerade to the Mall Crawl, there’s something for...
Hike of the Month: Fall Foliage Walk on Shanahan and Big Bluestem
It doesn’t take much for Coloradans to go into a complete and total fall frenzy. The daytime temps dip below 80, coffee shops add pumpkin spice to the menu, som...
Boulder Field Trip: Hike to James Peak
Fall is in the air, Boulderites. The days are getting shorter, the nights are getting cooler, and swaths of autumn color are popping up in town and on the trail...
Boulder Field Trip: Hike to Isabelle Glacier
Boulder has no shortage of hikes featuring incredible destinations, geological curiosities, and breathtaking views. From sweeping summits to rambling rivers, ou...
Sunset Hikes in Boulder: Three Routes and a Realistic Return Plan
Three Boulder-area routes for late-day walks, with the trailhead hours, city-listed segment lengths and closure page notes checked September 7, 2026 that decide...
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Hike Boulder: The Ultimate Bear Peak Guide
The City of Boulder boasts five beautiful peaks. Each one offers unique challenges and gorgeous scenery. From the diminutive but tough Mount Sanitas (6,863 feet...
The Boulderite’s Guide to Hiking Your First 14er
If you’re new to Boulder or just new to hiking, you might be wondering what a 14er is and why there’s so much buzz about them. Simply put, a 14er is any peak wi...
Boulder Field Trip: Hike Button Rock Preserve
Summer days are long and ideal for exploring new places. While Boulder is home to 150 miles of trails and 45,000 acres of open space, this is the perfect time o...