top of page

Experience Winter adventure like never before! Our 26 years of passion & experience will directly affect your adventure experience. 


Sun Dog's K-9 Uphill, Snowshoeing and Airboarding with the Times 023.jpg

Adventure with the original Sun Dogs not the copy cats 
There was no book on how to teach mountain biking in the mid-90s. We lterlly had to write it, as we developed and refined our teaching methodology, saving our guests years of time & effort as compared to "The School of Trial & Error." With more success, we added more instructors and adventure sports programs, including one of a kind adventures like snow fat biking & flat water canoeing in our nature preserve. Maximize your time,, while gaining NEW SKILLS with some of the most experienced cycling instructors in America offering you a 100% clean safety record

November 2022 COVID UPDATE:
We continue to apply the latest science & COVID protocols & our instructors are currently boosted. Thankfully, we operate with very safe distancing in the great outdoors. Pitkin County has a low transmission rate & has achieved a very high vaccination rate with over 90% of residents with at least one vaccination & 70% fully vaccinated. Masks are no longer required in public indoor spaces. As it has the past 26 years, your safety & wellbeing will continue to be our #1 priority. We have 100% clean safety record; rare for guided adventure sports in the Aspen area.


Heading 3



We're open 8:00-5:00 daily.

Your questions are always welcomed!


  • facebook
  • googlePlaces

Thanks for submitting!

Home: Contact
snowshoe 1 28 2.jpg


Quickly, safely & enjoyably GAIN NEW SKILLS & experience NEW THRILLS!

Home: Services

Mountain Biking Instruction in Aspen

As Western Colorado's original mountain biking instructors in 1996, we love to share mountain biking skills; our primary passion and save you years of time & effort as compared to "the school of trial & error" or tips from friends. You will also experience Aspen's most amazing mountain biking trails & Snowmass' sweetest singletracks.  

You will not only experience the best of Aspen mountain biking trails for your ability; you'll immediately improve your abilities for bike handling, climbing and descending. As pioneers in western Colorado, we developed mountain biking instruction and have dialed in our teaching process over 25 years of teaching and guiding. None of our "competition," including those who focus  on higher risk downhill mountain biking, even come close to our teaching and guiding experience. You benefit by maximizing your time, efforts and investment progressing quickly & safely. New skills mean new thrills...& less spills! Why just take an Aspen mountain biking tour, when you can be guided and significantly improve your riding with a highly passionate & experienced mountain biking instructor?

MTB 9 25 2_edited.jpg

Road Biking Instruction in Aspen

Gain new skills to become a road warrior!

You may be able to survive the ride, but why not thrive? We'll show you our favorite (& somewhat secret) Aspen & Snowmass road bike rides and techniques to immediately improve your safety, performance & enjoyment. New road biking skills focus on efficiency with body position & pedal stroke, climbing, descending, cornering & drafting. This is Aspen road biking adventure at its best!

Aspen Fitness Hiking

You and your family will experience the most amazing Aspen hiking trails and get a great workout at your own pace.

Why get an experienced instructor for hiking? We'll help you or your private group maximize the experience in terms of the most beautiful and appropriate location, offer you new skills and state of the art gear, including trekking poles, which add significant stability, propulsion & additional calorie burn. You'll see more stunning views, get a better workout and learn much more about hiking, the local flora, fauna and rich history than if you go on your own. 

HIKE 6 23 8.jpg
FAT 3 4.jpg


Experience the best of Aspen fat biking and release your inner child!

Fat biking is not only the fastest growing part of cycling; it's the hottest new sport on snow because it's LOL fun. As Colorado's original FAT BIKING OUTFITTERS, we'll take care of all the details, from the finest and fattest bikes, to the most gorgeous Aspen & Snowmass fat biking locations and key fat biking instruction to maximize the experience. Join us and get fat; the healthy kind!

Snowshoeing in Aspen & Snowmass

Feel the float at your own pace & put a smile on your face

Since snowshoeing has been our primary passion for almost 40 years, your fully customized private adventure will be the most amazing outdoor experience of your time in Aspen. We offer you incredibly beautiful locations, state of the art instruction and Colorado made snowshoes, including the world's first EVA foam snowshoes from our partner Crescent Moon Snowshoes in Boulder, CO. Are you ready to rock the snowshoe revolution with Eva? Once you feel the foam; light, cushioned with rocker,  it's the only way you'll roam! We also offer you all the latest accessories, like adjustable snowshoeing poles & gators & boxed Flow Spring Water & Honey Stinger Organic Waffles to keep you well hydrated & powered up! Gear matters and so does passion and experience. Our long time experience will directly & positively affect your adventure experience. 

CANOE 7 3_edited_edited.jpg

Flatwater Canoeing

Peaceful paddling through the North Star Nature Preserve

This is a truly one of a kind Aspen canoeing adventure. Learn a few basic paddle strokes or simply kick back for the most beautiful, peaceful escape on the magical meandering waters of the upper Roaring Fork River through our wonderful nature preserve. There may not be wild rapids, but there's plenty of wildlife to enjoy. Outrigger floats, like training wheels for a boat, ensure no sudden swimming adventure in the frigid snow-melt. This customized half day excursion is limited to one or two guests in "Winnie," our super stable & safe 17 foot Wenonah special edition Lewis & Clark canoe.

Our love of canoeing goes back over 50 years, to the days of growing up in Wisconsin. That love & experience translates directly to your one of a kind Aspen canoeing adventure.

Athletic Event Announcing

Professional Announcing and MC Services

Sun Dog Athletics Owner Erik Skarvan has become "The Voice" of Roaring Fork Valley events for over 25 years announcing local and national level endurance sports events, including road & mountain bike races, running races, triathlons, ski mountaineering & ultra races including most recently the popular Grand Traverse and  Power of Four races. He's been a live sports announcer at X Games, NORBA National Finals & the Blue Ribbon Alpine Challenge women's pro bike races (seen here). He's acted as an enthusiastic Master of Ceremonies at local fundraisers, live & silent auctions.

Erik brings his 35 year background as a multi-sport endurance racer, high energy, unique humor and local knowledge which informs & entertains the competitors & race fans like no one else. His motto "the next best thing to racing is talking about racing" reveals his love of event announcing. Erik Skarvan offers your event unparalleled racer insight, energy, passion, dependability and professionalism.


Please contact us today @ (970) 925-1069 message us via the form above or e-mail for further details, rates, reservations or just to talk shop. We love to share our passion for adventure sports! 

Get In Touch
bottom of page