1-on-1 Strength
Barbell and technique work that builds an anti-fragile, age-well body.
See strength trainingTrain
Personal training in downtown Boulder, built around how you move.
Work one-on-one with a certified personal trainer at ONE Boulder Fitness, downtown on Broadway. Eight certified coaches build programs for strength training, training after 40 and true beginners — the same coaching approach for everyone, tailored to your body and your goals. Every membership starts with a free consult, and your trainer, recovery suite, resident PT and dietitian are all under one roof.
Choose your path
Coaching for where you actually are.
Women’s Strength
The same 1-on-1 strength coaching, in a room built to feel like yours.
See women’s strengthStrong After 40
Bone density, longevity and mobility — programs built around joints with history and goals with nothing to prove.
See Strong After 40New to the Gym
Non-intimidating, patient, judgment-free coaching for wherever you're starting from.
See the beginner programSmall-Group Training
Semi-private coaching with better value per session, and a little built-in community.
See small-group trainingThe Gym Floor
Prefer to train solo? A clean, never-crowded floor with free weights, cardio and a functional area.
See the gym floorWhy train here
Your training is supported, not siloed.
At a studio, your trainer works alone. Here, your coach, the recovery suite, the resident physical therapist and the resident dietitian are all in one building — and they talk to each other. Train hard, recover in the sauna and the Cool Tub, get a nagging ache looked at by the physical therapist down the hall, and fuel with a plan that matches your load.
Book a free consult
How it works
STEP 01
Free consult
Included with membership. Meet a coach, talk goals, and map a starting point.
STEP 02
Your plan
A program built for your body, schedule and goal — not a template.
STEP 03
Sessions
1-on-1 or small-group, priced separately. Ask about rates at your consult.
What it actually looks like
A coach watching every rep.
Not a printout taped to a machine — a trainer standing right there, cueing form and adjusting the plan set by set. That's the difference between working out and being coached.
Common questions
Training, answered.
Do I need to be a member to train with a coach?
Most clients are members, and membership includes a free consult to start. Ask us about options if you’re not ready to join yet.
Is it beginner-friendly?
Very. Patient, judgment-free coaching, and a floor that's never crowded enough to feel intimidating.
How much does a personal trainer cost in Boulder?
Sessions are priced separately from membership and vary by trainer and format. We’ll share current rates at your free consult.
Can I train for a specific sport or goal?
Yes — strength, women’s strength, over-40, return from injury and other sport-specific goals. Our roster includes sports-performance and corrective-exercise specialists.
Start with a free consult.
Meet a coach, see the floor and the recovery suite, and leave with a plan.