• Has been certified through the Alpine Martial Arts Instructors Academy, a long-term program requiring hard work and dedication. This extensive, best-in-class training allows each instructor to customize each of your lessons to be the perfect balance of solid training, discipline, and fun!
  • Has passed a thorough background check by the F.B.I.  Your child’s safety is our #1 priority.
  • Is C.P.R. certified.
  • Loves the Martial Arts, and it shows!!!



Master Randolph started his Martial Arts training as a gift for his 11th birthday. He soon discovered a passion for it.

Master Randolph received his 1st Degree Black Belt at the age of 15, and continues his training under 10th Degree Black Belt, Grandmaster Jim Brassard, who has achieved countless awards, including one from President Obama himself. Master Randolph has been a leading competitor in tournaments since 1997, and in 2007 he achieved the coveted “Tournament Champion” – 1st Place in all three advanced Black Belt Instructor events: Kata, Weapons, and Sparring. In 2009, Master Randolph won 1st Place in the Black Belt Instructor Fitness Competition, beating over 20 black belt head instructors from around Colorado.

On March 2nd, 2013, he was inducted into the USA Martial Arts Hall of Fame as Martial Arts Master of the Year. On March 18th, 2017, he was inducted again as Master Instructor of the Year. He has been Head Instructor of Boulder Karate since 2003, loving every minute of it!

The father of two wonderful young boys, Master Randolph understands parents’ needs for their children through the martial arts. He also enjoys training weekly with his lovely wife, Nikole Randolph, who is also a Black Belt with over 10 years of training.

When he’s not practicing Kempo Karate, Master Randolph enjoys testing his grit and appreciating Colorado’s beautiful mountains. He has climbed all of Colorado’s 14ers (mountains over 14,000′), scaling over 1/3 of them in calendar winter. He also leads Boulder Karate’s yearly Climbing For Cancer hikes, which have led dozens of Boulder Karate students and parents to the summit of eight 14ers so far, and raised over $32,000 for cancer research. Master Randolph also loves Spartan Races, Tough Mudders, and GoRuck Challenges.

Today, Master Randolph holds the rank of 5th Degree Black Belt, and is committed to helping the community of Boulder experience how the martial arts can change their lives, inside and outside the dojo!



Sensei Kaley has been studying the Martial Arts since she was a child. She first achieved her Black Belt in Tae Kwon Do, then switched to Kempo over 10 years ago. She has been continuing her study of Kempo ever since. Sensei Kaley currently holds the rank of 4th Degree Black Belt in Kempo, under Master Randolph and Grandmaster Brassard.

As far as competition and demonstrations go, Sensei Kaley is a veteran. She has won trophies in state-wide and national tournaments, and has performed Martial Arts demonstrations at countless events, including a Denver Nuggets game.

Everyone loves Sensei Kaley. Her passion for the Martial Arts never seems to relent, whether she’s training or teaching. She is one of the most creative instructors around, and enjoys challenging students of all ages with her new drills to keep training fun year-round.

Parents also appreciate Sensei Kaley because she intuitively knows how to lovingly deal with whiny kids. If a child is trying to get out of doing their Karate class, Sensei Kaley is often able to work her magic and inspire the child to want to hop in, and they love her for it in the end!

Kids, teens, and adults of all ranks respect Sensei Kaley because she is knowledgeable, sincere, friendly and fun! It’s no surprise she has won multiple Instructor of the Year awards.



Currently a 3rd Degree Black Belt, Sensei Walker has been training at our dojo since he was 8 years old, and it shows! His technique is crisp, and he expects no less than our solid Boulder Karate expectations.

Sensei Walker truly understands that fitness is the foundation of a solid martial artist. He is always working out hard, keeping himself in “combat fitness” shape, and loves bringing new workouts to his classes. Whatever you do, don’t mention the Moby song “Flower,” or Sensei Walker will introduce you to one of his favorite killer workout routines!

Sensei Walker loves Spartan Races, and completed the Spartan Trifecta in 2016 (Sprint, Super, and Beast race levels). He’s also the leader of Sparring Club, and Combat Fitness classes on Saturday mornings.

A naturally hard worker, Sensei Walker actively enjoys putting Martial Arts techniques to the test to find flaws. He finds joy in discovering practical, efficient ways of moving and performing combos. He doesn’t mess around and he’s not in it for flash.

Children students love working with Sensei Walker because he is very good at coming down to meet them eye-to-eye in their lessons, even though he’s 6’7″! Adults and teens also love working with him, because he has a magical way of pulling out the best in them, and pushing them to higher levels. The other instructors of Boulder Karate voted him Instructor of the Year 2016. Come take a class with Sensei Walker and you will feel inspired as you get first class training from a man who has dedicated his life to the Martial Arts, and sharing his knowledge with others!



Sensei Jeff is a sharp Martial Artist who makes it look easy. He started training in Tae Kwon Do when he was 6 years old, and attained the rank of 2nd Degree Black Belt. Later, after a break for a few years, he felt the need to get back into it. So in 2010, he discovered Boulder Karate, and has since unleashed his true potential in the Martial Arts.

A middle school teacher during the day and Karate instructor in the evening, Sensei Jeff has seemingly unwavering patience. Even after his hardest days at school, Sensei Jeff arrives at the dojo with a heartwarming smile every time.

Sensei Jeff is Boulder Karate’s Summer Camp leader. He loves working with kids, and takes pride in his detailed Summer Camp activities schedule, and the kids can’t get enough! Sensei Jeff is also one of our top Climbing For Cancer supporters, having joined our hiking team to the summits every year since its inception, 2011. (Look for the guy in the silly costumes!)

Currently he’s a 2nd Degree Black Belt in Kempo, but even that doesn’t speak to just how talented Sensei Jeff truly is. His dexterity and balance are acutely honed, and he is always challenging himself by learning new Martial Arts flips, tricks, and complex movements. Sensei Jeff is poised for sky-high success in the Martial Arts, and training with him is an honor, as any Boulder Karate student would agree. His humility and confidence are in perfect harmony, and he rejoices in each one of his students’ successes, whether big or small!




Sensei Jerry started studying martial arts as child and fondly recalls those days as both difficult and invaluable. “I was smaller than most children my age, so traditional sports were difficult for me. When my parents enrolled me in Tae Kwon Do, we found that I had some aptitude for it despite my size. I enjoyed the practice, despite how tough it could be at times, which developed my confidence both inside and outside of the school.” Since then, Sensei Jerry has studied kung fu styles, Tang Soo Do, and a variety of weapons.

We asked him for a quick example of a challenging training story and Jerry chuckled. “One day as a boy I had accidentally stepped on a bee. It stung me, leaving my foot a bit swollen, but I still went to Tae Kwon Do class. The master of the school found out why I was limping a bit and decided to make that day focus on running jump side kicks to a hanging bag and footwork drills. I had to adapt how I moved to keep up with the class and that taught me to be more flexible with how I approach challenge.”

When asked what he likes most about martial arts as an adult, Jerry said he finds teaching students quite satisfying. “I remember what it’s like to have a teacher who encouraged me to push myself and the surprise I felt when I found that I could overcome limitations I previously had. Now, I find myself making sure to challenge and encourage students that I teach, so they feel that same sense of growth and accomplishment.”