view of mt. princeton from the infinity pool at Mt. Princeton Hot Springs Resort

Longevity
Series
Premier!

Ignite Your Life: The Longevity Retreat

Core Retreat: February 19 - 21, 2027
Add the night of Feb. 18 for a VIP experience
Nathrop, Colorado

We are thrilled to announce the return of Firefly’s annual winter retreat—this time with a focus on the science and art of longevity. This marks the start of our Longevity Series, a collection of experiences designed to help you not only live longer but also live better.

Why Focus on Longevity?

Aging is inevitable, but how you age is often within your control. This weekend is designed to bridge the gap between where you are now and the vibrant, mobile future you deserve. Through a curated blend of movement, nature, and community, you will leave feeling refreshed, inspired, and equipped with the daily habits that support a long, healthy life.

The Longevity Pillars of Our Retreat:

Move to Thrive: Our daily Yoga to Thrive classes are designed to combat age-related decline by sharpening body awareness and building the four essentials of independence: flexibility, mobility, strength, and balance.
Restore the Nervous System: In the afternoons, we’ll transition into stillness with yin yoga and guided meditations. By regulating your nervous system, you reduce chronic stress—a primary driver of cellular aging.
The Power of Geothermal Soaking: Rejuvenate your body in the therapeutic mineral waters of Mt. Princeton. Soaking in natural hot springs has been shown to improve circulation, reduce inflammation, and promote deep, restorative sleep, which is essential for cellular repair.
Nature as Medicine: Whether you choose to hike or snowshoe through the Rockies, you’ll be practicing a core habit of centenarians worldwide. Moving your body in the fresh mountain air at altitude challenges your cardiovascular system, while the "forest bathing" effect lowers cortisol and boosts immune function.
Nurturing the Gut: Explore the hidden engine of your health in our optional Microbiome Workshop. You’ll learn simple, science-backed ways to improve your gut health, which is now recognized as a critical factor in healthy aging and cognitive clarity.

Choose Your Experience – Go VIP:

Elevate your stay by arriving a day early for an exclusive pre-retreat experience, giving you extra time to settle into the mountain rhythm.

Join us to ignite your life, master the habits of health, and discover what it truly means to thrive. Firefly retreats are designed to help you reconnect with yourself, others, and the natural world.

What to Expect

This weekend in the mountains of Colorado will include:

Daily yoga classes appropriate for all levels, including Yoga to Thrive practices to build body awareness, strength and balance, and yin practice to increase flexibility and mobility

Nourishing meals beginning with dinner on Friday evening and ending with breakfast on Sunday morning

Group hike (if snowshoes are needed, extra cost may apply for equipment rental)

Smart Ways to Fuel Your Microbiome Workshop

Access to the spa, hot springs, sauna, and cold plunge

Two nights of lodging at Mt. Princeton Hot Springs Resort (See below for room options)

If you sign up for the VIP package, you will receive an additional longevity workshop, a plant-based meal with cooking tips, and an additional yoga class.

A full schedule of meals, yoga classes, and group activities will be provided closer to the retreat dates.

A previous Colorado Winter Retreat Participant had this to say about the experience:

"I really loved everything about the retreat and am so grateful for this experience. Everyone was so welcoming and full of positive energy. I enjoyed all of the yoga, meditation, hiking and nature. Thank you so, so much. I highly recommend and would definitely do this retreat again! It was a very well-rounded experience."

a group of women in tree pose in front of mount princeton in colorado

The Details

Retreat rate includes:

2 nights accommodations at Mt. Princeton Hot Springs Resort
Most Meals (dinner only on arrival day, breakfast only on departure day)
Daily yoga session(s)
Access to hot springs and pools
Group hike
Longevity Workshop
Credit Card processing fees

Additional inclusions applicable to the VIP package:

3rd night of accommodation at Mt. Princeton Hot Springs Resort
Plant-based dinner on Thursday evening
Additional longevity workshop (more information available soon)
An additional yoga class

Retreat rate does not include:

Airfare to/from Colorado
Transportation to/from the resort
Lunches
Spa treatments or additional excursions
Gratuities
Alcoholic drinks and cafe purchases

Host location: Mt Princeton
Hot Springs Resort

Our host location is Mt. Princeton Hot Springs Resort, located three hours from Denver between Buena Vista and Salida, and at the foot of the Collegiate peaks of the Rocky Mountains. Indulge in the multiple pools fed by 100% natural hot springs, treat yourself at the spa, and enjoy meals that provide the nourishment you'll need for yoga and hiking.

Reconnect with yourself in the serene natural environment. Take the opportunity to rest, replenish, and renew yourself as you discover beauty, inspiration, and history around every corner.

As part of the retreat, you will have access to the Spa, Club, and hot springs. Enjoy the Soaking Pool, Infinity Pool, and the hot springs in Chalk Creek, a must-do at Mt. Princeton Hot Springs Resort. These pools are located right in the midst of the cool rushing waters of Chalk Creek. Each pool is fed by its own natural geothermal hot spring that bubbles up into the actual creek bed and into circles of stones that create natural pools. Control the temperature by simply removing a few stones to allow cooler water to rush in.

The Spa and Club is the place to get away from it all. Enjoy the steam rooms, saunas, plus guest- and adult-only hot spring pools. Enjoy the Juice Bar inside before or after your Spa appointment to unwind in style. Professional and personable, licensed massage therapists have a gift for making you feel comfortable and a knack for relaxing your body’s hidden tensions. Specialists in medicinal massage and oriental body work, they are highly skilled in cranial massage, myofascial release, and reflexology. Exfoliating salt scrubs and deep tissue massage are also favorites of Mount Princeton guests.

Accommodation Options
and VIP Package

The price shown below is the total investment for the core retreat based on room selection.

VIP Package Add-On: Get started on your path to a healthier, happier life with this unique offering while on retreat. You'll arrive a day early to enjoy a home-cooked, plant-based dinner, an additional longevity workshop with Carrie, and a yoga and meditation class. Reclaim control of your health. Get reacquainted with your body and what it needs so you can feel at home in it again!

To sign up for the VIP package, select the add-on when registering. The investment for this package is $450/person for those in a double-occupancy room or $550 for those in a single room (including the cabin bedroom).

Hillside Rooms (3 Rooms Available)

Double occupancy: $895/person; $845/person if registered by August 21, 2026

Single occupancy: $1,095; $1,045 if registered by August 21, 2026

These rooms provide excellent views of the surrounding mountain range, with close proximity to the conference cabin where the yoga classes will be held, and to the upper pool area. Rooms are equipped with a mini fridge, Keurig or Nespresso coffee maker, air conditioning, and flat-screen TV. These rooms have two queen beds.

Cliffside Rooms (3 Rooms Available)

Double occupancy: $915/person; $865/person if registered by August 21, 2026

Single occupancy: $1,125; $1,075 if registered by August 21, 2026

Tucked away from it all, enjoy these guest rooms with two queen beds, vaulted ceilings, and a spacious layout. Rooms are equipped with a mini-fridge, Nespresso Coffee Maker, microwave, air conditioning, and flat-screen TV. Panoramic views will lure you outdoors to a quaint patio area.

Creekside Rooms (3 Rooms Available)

Double occupancy: $975/person; $925/person if registered by August 21, 2026

Single occupancy: $1,250; $1,200 if registered by August 21, 2026

The Creekside Suites offer two queen beds. Many of the units are centered around a glass-front fireplace and include ample relaxation space and kitchenettes. Units are situated East of the Main Lodge and Spa. These newer guest rooms, opened in 2018, feature modern finishes, wifi, and balconies directly on Chalk Creek.

Cabins (1 Large Cabin and 1 Regular Cabin are Available)

Queen Bed in Loft*: $895; $845/person if registered by August 21, 2026

Queen Bed in Private Bedroom*: $1,100; $1,050 if registered by August 21, 2026

Rustic at heart, the Full cabin has one bedroom on the main floor with a queen bed, while the Large cabin has two bedrooms on the main floor, each with a queen bed. Both cabins have a loft with two queen beds, a fireplace, and a kitchen with a full refrigerator, microwave, coffee maker, and stovetop (no oven). The Full cabin has one bathroom, and the Large cabin has two bathrooms. Step outdoors and enjoy the surrounding Chalk Cliff views from your private deck or patio. All Cabins are a short walk to any of the natural hot spring pool areas and the Spa and Club at Mt. Princeton.

*Please note that the amounts shown are based on three people in the Full Cabin (2 people in the loft and 1 person in the bedroom) and four people in the Large Cabin (2 people in the loft and 1 person in each of the two bedrooms). If only one person registers for the loft, a $75/night supplement applies. In case a couple is interested in a cabin bedroom, please contact us.

Payment Details and Cancelation Policy

To reserve your space on this retreat, a non-refundable US $250 deposit is required. A payment schedule will be provided upon registration. You may pay in full at any time prior to January 20, 2027. Anyone registering after January 20, 2027, will be required to pay in full upon registration.

Should you need to cancel your reservation at least 30 days prior to the start of the retreat, you will receive a refund for the payment made, less the $250 deposit. Should you need to cancel less than 30 days prior to the retreat, for whatever reason, we will not be able to provide a refund or credit. No refund or credit will be given for arriving late or departing early. In the unlikely event that Firefly needs to cancel the retreat, a full refund, less any processing fees, will be given.

We strongly advise purchasing trip insurance at the time of booking your retreat in case of any unexpected events or changes to your plans before or during your trip. Please contact us for a trip insurance quote. By submitting your registration and deposit for this retreat, you are agreeing to our payment and cancellation policies and event waiver.

Meet your guide: Carrie of Firefly Community

Carrie Lehtonen's second chance at life came at 31 years old when a blood clot in her coronary artery resulted in a heart attack. As a healthy triathlete in the prime of her life, Carrie was the last person anyone would suspect of having heart disease. After 20 years of experience in Human Resources, Carrie chose to pursue a second career in health and wellness to help people find their path to better health and live inspired lives. Carrie is committed to reducing the impact of heart disease and loves seeing people light up when they learn something new, challenge themselves beyond what they think they are capable of, and tap into their passion.

Carrie is the founder and president of Firefly. Carrie created Firefly because she believes that what the world needs most is for every person to uncover their passion and live an inspired life. We all have a unique gift, and it's Carrie's mission to help you ignite your inner light so that you can shine!

Carrie is a Registered Yoga Teacher and Educator (E-RYT500) with training from CorePower Yoga and Vessilify in Colorado, Prajna Yoga in New Mexico, Nosara Yoga Institute in Costa Rica, and more. She has training in vinyasa yoga, yin yoga, anatomy, yoga therapeutics, Self Awakening Yoga (SAY), and stand-up paddleboard yoga. She attended the Institute for Integrative Nutrition, where she was trained in more than one hundred dietary theories and studied a variety of practical lifestyle coaching methods. Carrie is certified as a Holistic Health Practitioner by the American Association of Drugless Practitioners.

Carrie lives in Evergreen, Colorado with her husband, two dogs, and two cats. She is a lifelong learner who loves to travel, be outside in nature (hiking, biking, paddle boarding, cross-country skiing, and trail running), writing, and practicing and teaching yoga. Carrie is a member of the local Rotary Club.

Longevity Series Premier!