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Endurance isn’t built by chance. It’s engineered through physiology, movement, and smart training.
 
Whether you’re preparing for a local Summit County event or a bucket-list race, our coaching gives you clarity, direction, and confidence.
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The SSL Coaching Philosophy

Unlike generic endurance coaching, SSL integrates:

 

  • Physiology (VO₂, lactate, metabolic crossover)

  • Biomechanics (running gait, bike fit analysis)

  • Strength & mobility

  • Nutrition strategy (via Cindy)

  • Injury prevention & load management

  • High-altitude training principles

  • Orthopedic medical oversight (via Dr. Dallow when needed)

 

This is endurance training without the guesswork—built by a multidisciplinary performance lab.

Who We Coach

Cyclists ~ Runners ~ Triathletes ~ Ski Mountaineers ~ Adventure & Stage-Race Athletes ~ Newer Endurance Athletes ~ Busy Adults ~ Longevity-Focused Athletes ~

Your Endurance Coaching Team

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Dr. Kurt Dallow, MD

Orthopedic physician • Triathlete • Ironman • Endurance coach

Specializes in medical oversight, physiology interpretation, and long-course endurance strategy.

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Duncan Koehn, MS

Exercise physiologist specializing in endurance physiology, performance planning, and data-driven training.

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Aaron Castonguay, DPT

PT + performance specialist integrating gait/bike biomechanics, strength programming, injury prevention, and conditioning.

Endurance Coaching Services

Personalized Endurance Training Plans

Zone 2 development, threshold and tempo progression, long-ride/run strategy, recovery structure, strength training blocks, altitude-specific adjustments, flexibility for real-life scheduling

VO₂ & Lactate-Informed Training Zones

You’ll know:

  • Exact aerobic threshold

  • Exact anaerobic threshold

  • Fat vs carb utilization

  • Metabolic durability

  • Your optimal intensities for each session

Race Preparation & Strategy

Includes:

  • Pacing strategy

  • Fueling plan

  • Recovery strategy

  • Altitude adjustments

  • Equipment setup (bike fit, footwear, hydration systems)

Strength Training for Endurance Athletes

  • Hip stability for runners

  • Climbing torque for cyclists

  • Single-leg strength

  • Ski mountaineering load tolerance

  • Core & rotational power

  • Tendon resilience training

Technique Optimization

(Optional add-ons)

  • Running gait analysis

  • Bike fitting & posture optimization

  • Swim form review

This tightens the “leaks” in your efficiency.

Check-in's & Accountability

Depending on coaching level:

  • Weekly or biweekly feedback

  • Messaging within TrainingPeaks

  • Data review (HR, power, pace, RPE)

  • Progress meetings (virtual or in-person)

Ready to train with purpose?

What You Receive with Coaching

  • Customized week-to-week endurance plan

  • Strength training built into your schedule

  • Lab-based zones (VO₂, lactate, or both)

  • Regular feedback and adjustments

  • Race strategy and fueling plan

  • Movement & mobility recommendations

  • Optional gait or bike analysis

  • Clear, measurable progression

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