Precision Fitness Assessments & Exercise Testing in the Bay Area

At Endurance PTC’s state-of-the-art eLab in Mill Valley, we offer science-backed exercise and physiological testing to help you train smarter. Whether you're a competitive athlete, a recreational cyclist, or just getting started on your fitness journey, our data-driven evaluations are tailored to support your personal performance goals.

Find the test for you

Why Test at eLab?

Trained experts + clinic-grade tools: Get not just data, but understanding. Our exercise physiologists interpret your results into actionable coaching.
Trusted & tailored: A decade of reliable testing and coaching in the Bay Area.
Designed for everyone: Whether you’re chasing podiums, come back from injury, or rediscovering fitness - this is for you.

What You Walk Away With

Sharpened training zones: dial in intensity for better workouts.
Personalized fueling & hydration strategies: knowing your FATmax or sweat sodium levels lets you perform smarter.
Solid benchmarks: measure progress and stay accountable.
Clear next steps: whether you're building performance, regaining confidence after injury, or starting fresh.

Who benefits from our testing?

We've designed our lab to meet the needs of every body - from accountability seekers and fitness enthusiasts to elite competitors. Whether you're interested in a fitness assessment, looking to measure your body composition, or optimize your cycling performance, we have a test for you.

Explore our most popular packages: