Ark Ninja is a premier ninja warrior training and movement facility located in Longmont, Colorado, designed for athletes ages 2 and up.
Inspired by the sport of American Ninja Warrior, Ark Ninja provides a safe, structured, and high-energy environment where athletes of all ages and ability levels can build strength, confidence, resilience, and character through movement. Our facility features professionally designed ninja obstacles including warped walls, climbing elements, balance challenges, grip obstacles, and dynamic courses that are constantly evolving to keep training fresh and engaging.
Programs are thoughtfully structured to meet athletes where they are—whether they are just learning basic movement skills or preparing for high-level competition.
Ark Ninja offers a wide range of programs, including recreational ninja classes, competitive team training, open gym sessions, camps, clinics, birthday parties, and special events. Our recreational programs focus on foundational movement, coordination, problem-solving, and confidence, while our competitive programs emphasize advanced technique, obstacle strategy, mental toughness, and preparation for leagues such as UNAA, FINA, and Colorado Ninja League.
In addition to weekly classes, Ark Ninja hosts seasonal camps, school-break camps, Parents’ Night Out events, and community gatherings that provide athletes with a fun, active alternative to traditional childcare. We also host and support local, regional, and national ninja competitions, welcoming athletes from across Colorado and beyond.
At the heart of Ark Ninja is a commitment to developing more than just physical ability. Our coaching philosophy emphasizes perseverance, discipline, teamwork, and a growth mindset—helping athletes learn how to face challenges, overcome obstacles, and carry those lessons into everyday life.
Our experienced coaching staff is passionate about mentoring athletes and creating a positive culture where effort is celebrated and every individual is encouraged to become the best version of themselves. Whether an athlete’s goal is to try something new, stay active, build confidence, or compete at the highest level of the sport, Ark Ninja exists to help them discover their potential—on the obstacles and beyond.
Business Review
"We are so grateful for the family our son has found at Ark! Wonderful facility, patient coaching staff, and amazing events and opportunities happening all the time. Plus getting to train alongside his ninja heroes is pretty incredible! In the past, our son has struggled to feel like he fits in and this is the first thing he’s been part of that he says feels like he belongs and it feels like home. We don’t have enough good to say about Nate and the program he has created!" -Destiny
"I love ARK for many reasons, but the MAIN reason is the sense of family. This place is full of people who are passionate and excited to see you succeed.From the little goals to the BIG Accomplishments, this team is ready to cheer you on and help you fulfill your goals. ARK is No1." -Ivo
"We love Ark Ninja! The environment and culture is so uplifting! My kids have a great time and they are learning so much. The obstacles are challenging and enjoyable" -Marcy
