The Boundless Difference

Boundless is the leader in preparing individuals for life changing events and accomplishments.

Our Elite Coaches


Cat Bradley


My running journey began as an 800-meter runner at UC-Santa Barbara, where I quickly realized that my spirit was not on the track, but in the mountains. Craving a little adventure and needing to do some self-exploration, I thru-hiked the Appalachian Trail with very little experience. In fact, the warmest article of clothing I packed was my cotton track-suit coupled with a poncho, and I had no idea sleeping pads even existed. However difficult it was, my love for the trails was ignited and has guided my choices since.

My performance at the Bear 100 in 2015 (23:02, 7th fastest time in history) triggered a competitive side in a sport I had previously approached fairly casually. In 2016, I upped my volume from twenty miles per week resulting in a season of podiums and a few wins.

In November of 2016, I won Rio Del Lago 100, coming in under the previous 11-year-old course record. After a hard winter of training and dark mornings balanced with a full-time job as a kindergarten teacher, I was rewarded with a successful 2017 season including a win at the Western States 100.

  • The 2017 Western States 100 Win- toughest conditions the race has ever seen. 13th overall
  • Ultra Trail Mont Du Blanc 8th place women, 1st American women, 3rd American over-all, Fastest top ten women in race history
  • Current Rim-to-rim-to-rim Fastest Known Time Holder in 7:52. Broke a 10 year old Record. First woman to break 8 hours
  • Canyons Endurance Run 100k Win minutes of the course record (Course record held by three-time Olympian and Western States 100 champ Magdalena Boulet). 5th overall
  • Rio Del Lago 100 win and course record. 6th overall
  • The Bear 100 2nd place and 7th fastest women’s time in history. 15th Overall
  • 2018 Moab Red Hot 50k Win and 10th overall
  • 2018 Quicksilver 100k Win and Course Record
  • Ultra Runner of the year 2017- 5th
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Jason Friedman, MD


As a physiologist and physician, I believe in integrating the scientific aspects of training with the joy and appreciation for the sport I’ve gained over thirty years of running and racing on trails, roads, and track. My goal is to help build a varied, sensible training plan that fits into your busy lifestyle, and will help you reach the finish line happy, healthy, and enthusiastic for whatever challenges lie ahead.

Education & Certifications

Physician and Physiologist



Ultra Distance/Trail Runner/Road Racing/ Exercise Physiology


Integrating scientific aspects of training toward the achievement of your goals

Race Resume:

USATF National Champion (40-44), 100K Trail

Top-10 finishes at national championships at 50K, 50M, 100K, 100M, and 24 hours

“Big Buckle” at 2018 Leadville 100 in 22:40

Over forty ultramarathon finishes,

Two-time finalist for RunUltra Blogger of the Year.


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Jeff Winkler


As a Bike Coach Jeff combines his extensive racing experience with his knowledge of science and coaching to get results for his clients. Jeff has coached clubs, teams, and individuals of all ages and competitive levels. Jeff worked with Sepp Kuss as his collegiate coach and 1-on-1 to help him transition from MTB to the Road. Numerous other elite and masters athletes have achieved PRs, top results, and enhanced fitness while working with Jeff. He continues to participate in Road, Gravel, MTB and CX events.


  • Road
  • Gravel
  • MTB (XC & Endurance)
  • Cyclocross

Education & Certifications:

  • USA Cycling Level 1 Coach (highest level)
  • Training Peaks Level 2 Coach (highest level)
  • Certified Personal Trainer
  • Certified Nutrition Coach
  • SafeSport Certified
  • B.A. Political Science
  • Juris Doctor
  • CPR/AED/First Aid
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Junko Kazukawa

Ultra and trail runner living in Denver CO, Japanese born, 2x breast cancer survivor, 30+ years of experience in health, fitness, and training fields. Currently works as a UESCA certified running coach, a personal trainer, Group Fitness instructor, and Run Club coordinator at Colorado Athletic Club Tabor.

My passion is to motivate and guide people to accomplish their athletic goals with my long time experience on training, completing endurance events, and the knowledge of human body and movements. I enjoy working with all levels of people-especially someone new to the running or older athlete like myself and coaching by creating their individualized training plans with efficient strength training plans to improve weakness and prevent from injury.

I love challenging, am still completing myself in ultra endurance events as an older athlete, and enjoy being a part of running community. I am a Altra Red team athlete, a Nuun ambassador, and a part of the Berkeley Park Running Company team.

My biggest accomplishment is that I survived from cancer twice, and I finished 19 one-hundred miles ultra running races so far including Leadville 100 Run, some international races like UTMB in Europe, UTMF in Japan, and Ultra fiord in Chile Patagonia, and I am a first person to complete Grandslam of ultra running and Leadwoman in the one season in 2015. I love outdoor activities, exploring the Colorado mountains, and has summited many Colorado 14ners, Mt Rainer, Kilimanjaro, and Mont Blanc.

Education Background

  • Bachelor degree in Kinesiology
  • Master agree in Exercise Physiology
  • UESCA Running coach
  • ACE Personal trainer
  • ACE Group Fitness Instructor
  • Schwinn / Stages Cycling
  • ViPR, TRX, BOSU etc
  • Wilderness First Responder
  • CPR/AED/First aid
  • Bilingual Japanese and English


  • Trail running
  • Ultra distance
  • Marathon
  • Halfmarathon
  • Strength training for endurance athlete


  • 19 hundred mile trail running races finisher as is 2021
  • Grandslam of Ultra running 2015 1st female
  • 2x Leadwoman 2014, 2015
  • 50+ full marathons finisher


  • 2015 Sports Women of Colorado
  • Ultrarunning/ Inspiration category
  • 2017 voted as one of Colorado Resident badass
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Jonathan (Jon) Clinthorne, PHD


Jonathan (Jon) Clinthorne is an ultraendurance athlete with a doctorate in Human Nutrition from Michigan State University. Growing up as a competitive swimmer, the idea of training for 2 hours a day when training for ultramarathons did not seem outlandish, so he jumped right in. During college he decided to pursue nutrition as a full-time career, falling in love with the biochemistry of ultraendurance athletics. He has run over 50 ultramarathons, including twelve 100 mile races. Jon has self-experimented with just about every nutrition approach and over the years found what works and doesn’t work. He specializes in evidenced based nutrition counseling that is combined with his deep practical knowledge of sport. His philosophy is that there is no “one size fits-all” approach to endurance nutrition and instead prefers to work with his clients to determine which evidence-based approach will fit them best. He serves on the Board of Directors along with being the Course Director for the High Lonesome 100. When not running you can find Jon skiing or hiking in the mountains of Colorado.


  • Nutrition counseling
  • Ultramarathon
  • Marathon
  • Half Marathon


  • BS – Human Biology, Michigan State University
  • PhD – Human Nutrition, Michigan State University

Running History & Awards

  • Twelve 100 mile finishes
  • 50+ ultramarathon finishes
  • 35 top-ten finishes
  • 3 course records

Scott Jordan, MD


Scott has 30 years experience in endurance and multi sport racing and has numerous podium finishes from 5k and sprint distance triathlons to 100 mile trail runs and he still has a busy race schedule. He credits his longevity to focusing on keeping it all fun and jokes that he has learned to train the “aging athlete” through personal experience.

As a physician and coach, he is passionate about helping people get beyond their self-perceived limitations, overcome obstacles, and change their life. He likes to teach people how to anticipate and solve problems, be adaptable and be resilient. Scott can help you be physically prepared for your challenge and have the mental fortitude to get across the finish line with a smile.


  • Marathons & Ultra marathons
  • Triathlons
  • Nutrition Counseling
  • Life & Wellness Coach


  • Achieving our goals with a balanced lifestyle, using sound medical principles of nutrition and physiology, appreciating each person’s uniqueness, while having a blast.


  • Family Physician with interests in Sports Medicine & Nutrition

Athletic History

> 100 marathons & ultra marathons

  • 8 time 100 mi trail run finisher
  • Western States 100 mi finisher
  • 2 time Leadville 100 mi trail finisher
  • 3 time Leadville Silver Rush 50miler finisher
  • 3 time Boston Marathon finisher
  • 74 triathlons
  • 6 time Ironman Triathlon finisher

Kathy Pidcock


With over 35 years of distance running experience, Kathy has competed in events ranging from 5K to 100 miles in addition to solo expeditions. Coupled with a certification in 'The School of Hard Knocks,' she coaches with empathy and experience. Her passion lies in coaching and running the trails, but she also enjoys coaching beginners, as she helps them realize their dreams of becoming runners. Kathy's basis for coaching is to create a foundation of healthy runners that have fun competing and accomplishing their running goals well into their master's years.


  • Trail Running especially Ultra Distances
  • Marathon
  • Half Marathon
  • Master's Running

Education & Certifications

  • Life Time Run Certified Coach
  • Arthur Lydiard Certified Coach
  • Focus n Fly Coach
  • A.S. Dental Hygiene

Running History & Awards

  • 2-time Leadville 100 Mile Finisher
  • Western States 100 Mile Finisher - 3rd place Age Division
  • Grand Canyon R2R2R Finisher
  • 2-time Rocky Raccoon 100 Mile Finisher - 2 Age Group Records & 3rd Place Overall Finish
  • 220 Mile John Muir Trail Finish
  • Ironman Triathlon Finisher
  • USATF Master's Women's Colorado Ultra Marathon Trail Champion
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Jill Becker


As a Run Coach & Personal Trainer, Jill combines her love of fitness and the outdoors with her knowledge of science and coaching to bring results to her clients. Her passions are living a healthy life, adventures, running, biking (road and mountain) and swimming. As a survivor of Achilles Tendon surgery, Jill understands how to rebuild fitness after injuries to get back to doing what you love. She rebuilt her own fitness to become even stronger, with multiple podium finishes at distances from 40 miles to 100 miles!


  • Ultra Distance
  • Marathon
  • Half Marathon
  • 5K's & 10K's
  • Triathlon Run Segment

Education & Certifications

  • Bachelor of Science in Sports Science
  • Physical Therapist Assistant Degree
  • NCSF Personal Trainer
  • NETA Wellness Coach
  • RRCA Certified Running Coach
  • Life Time Run Certified Coach
  • CPR/AED/First Aid

Running History & Awards

  • 2016 Leadville 100 Run Finisher
  • Silver Rush 50 & Leadville Trail Marathon Finishes
  • 6th Place Female - Prairie Spirit 100
  • 8th Place Female - Ghost Train 100
  • 2nd Place Female - TommyKnocker 12 hr
  • 2nd Place Female - Soggy Bottom 40 miler
  • 2x Overall Female - Riddlebox 50k
  • 1st Place Female - Prairie Spirit 50k
  • 2011 Boston Marathon Finisher
  • 20+ Ultra Distance Finishes
  • 10+ Marathon Finishes
  • 10+ Half Marathon Finishes
  • 25+ Triathlon Finishes
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Scott Tietzel


Scott brings more than 25 years of race experience in cycling ranging from cross country and endurance mountain biking, gravel, road, time trial and cyclocross disciplines. He has raced professionally and internally with several teams throughout North America, Europe, Australia and the Caribbean. Although somewhat retired from full time racing, he continues to focus on racing endurance events in both mountain bike and gravel such as the Leadville 100 and Unbound 200.

In addition to cycling, he has is an accomplished Nordic ski racer and coach in both classic and skate techniques. A 4 time racer at the Junior Olympics for the Rocky Mountain Division and one year racing NCAA D1 with Western State College.

Outside of racing Scott uses his extensive knowledge and works in sales and product development for a custom apparel brand which produces cycling, running and triathlon products for athletes of all levels. He is also a long time coach with the Boulder Junior Cycling Team and focuses on mountain biking with high school age kids.


  • Endurance Mountain Biking
  • Gravel
  • Time Trial
  • Road Racing
  • Nordic Skiing

Education & Certifications:

  • Bachelor of Art in Digital Media
  • USAC Level 1 Coach
  • Safe Sport
  • CPR/AED/First Aid
  • Double-Goal Coach
  • HEADS UP to Youth Sports


Success occurs when opportunity meets preparation.

Athletic History:

  • 1st Bailey Hundo 2012, 2013
  • 1st Colorado State Pro Time Trial 2011
  • 6th place at the Leadville 100 MTB
  • 10 consecutive Leadville 100 MTB finishes under 7:20
  • 9th overall at the 2021 Leadboat Challenge
  • 17th overall Tour of Utah 2009
  • 2019, 2021 Unbound Gravel 200
  • 2008 Tour of California
  • 2009, 2010 Philadelphia International Cycling Classic



Deanna works full-time as a Dental Hygienist while also pursuing her personal athletic goals. She understands what it takes to juggle work, family, athletics, and social life. She designs workouts based on individual client’s schedule/goals.

Deanna utilizes a strong background in anatomy, physiology, kinetic anatomy, and general athletics to expertly coach diverse clientele on nutrition and fitness regimes. As your coach she will design and implement appropriate exercise programs to accomplish individual's goals.

Deanna provides coaching, motivation, programming, and gear advising for all athletic abilities in areas of fitness, nutrition, and lifestyle modifications. She has experience with customized programming for specific needs including diabetes, osteoporosis, post-partum fitness, weight loss, injury recovery and prevention, and general wellness.

Deanna has worked with athletes of all abilities, from the post-partum mother to the division 1 elite athlete. Deanna worked as a strength coach at CU Boulder designing workouts for Division 1 Cross County, and Track teams. In order to keep athletes healthy she identified issues and complications surrounding sports injuries, and modified workouts to compensate. She advised athletes on proper gear to prevent injury and to maximize performance.

Deanna’s Personal Running Accomplishments:

  • Two time Olympic Trials Qualifier (2012/2020)
  • Second/Sixth American at Chicago Marathon (2011/2012)
  • Third American at Philadelphia ½ Marathon (2013)
  • Selected for the USA team to compete in the Bolder Boulder (2019)
  • Fifth place finish at USA Mountain Running Championships
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Ryan Krol

Founder and Coach

Ryan's love for running ultra distances and exploring the mountains ignites his passion for showing people how to enjoy a lifestyle centered on fitness and health. Ryan has coached dozens of clients to successfully complete the Leadville Trail 100. He is a versatile coach who helps clients ranging from professional athletes to the beginner runner achieve a wide range of individual goals. For example, several clients have lost over 100 pounds, two have achieved a Boston Marathon Qualifying time and many have completed other grueling ultra marathons. In addition to his ultra-marathon experience, Ryan is a NASM-certified Personal Trainer. With twelve years of experience, he helps clients stay injury-free through functional training. Ryan is an avid outdoorsman and when he's not running he enjoys skiing, rock climbing, mountain biking and backpacking.


  • Ultra marathons
  • Trail races

Education & Certifications

  • Western Illinois University - Marketing
  • NASM
  • Life Time Run Certified Coach
  • CPR/AED/First Aid

Running History & Awards

  • 50+ ultra marathon finishes
  • 4-time Leadville Trail 100 Run Finisher
  • 3rd place overall Silver King 2016
  • 6th place overall Leadman 2016
  • 6th place overall Leadman 2015
  • 1st Place Javelina 100K 2014
  • Summit Aconcogua 2016
  • 8th place Collegiate Peaks 25 Miler 2015
  • 21st place Denver Rock n Roll Marathon 2014
  • 4th place Red Hot 30K 2015
  • 2nd place Behind the Rocks 50 Mile
  • 3rd place Behind the Rocks 30K