jeffrey mascaro

Circular logo for the American Mountain Guides Association featuring a stylized mountain and a climbing pick, with the organization's name around the circle.

founder | Co-owner | lead guide

“How can you be the best version of yourself?”

Jeff Mascaro is an accomplished alpinist, educator, and entrepreneur. An expert in curating a vision and team towards one mission; Jeff is one of the rare guides with technical and corporate expertise, allowing him to inspire, educate, and motivate you on your next adventure.

Jeff’s story and mission for Smile Mountain Guides

He shares his passion for the mountains through the lens of teaching, using the outdoors as a classroom to cultivate internal growth, build life experiences, and share more deeply why climbing can be an important aspect of life.


Jeff spends most of his time guiding private guests and small groups in Colorado, Utah, and Washington, helping them to achieve their goals in the mountains by building and arranging custom, personalized itineraries that build upon previous experiences.  

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| PROFESSIONAL CREDENTIALS |

Founder & Co-Owner of Smile Mountain Guides

15 Years Guiding

Former Director of Outdoor Climbing School, Earth Treks Climbing Centers

Commercial Routesetter 10 Years

AMGA Certified Alpine Guide

AMGA Certified Rock Guide

AMGA SPI Program Provider

A3 Approved Pro 2 Avalanche Certification

A3 Lifetime Professional Member

Wilderness First Responder W/ CPR training.

A climber in orange gear and a blue helmet stands on a snow-covered mountain, holding an ice axe, with snow-capped mountains in the background.

ISHINCA VALLEY, PERU

| GALLERY |

A climber in an orange jacket, black cap, and gloves, preparing climbing gear on a rocky mountain slope with snow-capped peaks in the background.

GRAND TETON

CORDILLERA BLANCA, PERU