Endurance Coaching · Est. Nantucket

Tidal Endurance — train smarter, race stronger.

DisciplineRun · Tri · Ultra
PhilosophyEvidence-based
CoachDave Desnoyers
01 · About

Train Smarter, Race Stronger.

Mission

At Tidal Endurance, our mission is to empower athletes to reach their full potential through purposeful, evidence-based, endurance training. We combine theory and the most recent training science, with real-world racing experience, to help athletes train smarter, race stronger, and thrive in their pursuit of balance in health and performance.

Introduction

Dave Desnoyers is a dedicated endurance coach specializing in running and triathlon performance. With a comprehensive understanding of theory, performance optimization, and injury prevention, he helps athletes reach their full potential. With a diverse racing background, from 5kms on road to 100km on trail, and AG finishes at short and long course triathlon, Dave brings firsthand experience to his coaching.

Dave's evidence-based approach and commitment to athlete development ensures that every plan is purposeful, sustainable, and aligned with success. He has coached athletes in their 20's through 70's to debut marathons and many PRs.

  • Dave racing the Chicago Marathon
  • Dave running the Boston Marathon
  • Tidal Endurance branded socks at the start line

Credentials

  • RRCA Certified Coach, 2024
  • CPR, AED, First Aid Certified, 2024
  • USAT Certified Coach, 2025

Experience

Triathlon
  • 2025Ironman Maryland 140.69:46:28
  • 2024Patriot Half Ironman 70.34:45:00
  • 2023Nantucket Sprint Tri (Debut)1:17:00
Marathon
  • 2024Chicago Marathon 26.22:52:01
  • 2023New York Marathon 26.23:12:15
  • 2017New Hampshire Marathon 26.2 (Debut)4:01:51
UltraMarathon
  • 2025Hamsterwheel 12hr - 100k1st Pl
  • 2024Anchor Down 6hr - 37mi1st Pl
  • 2018Badwater Cape Fear - 50k5:13:00
FKTs
View Profile →
  • 2026St Kitts Circumnavigation5:10:15
  • 2023Bermuda Rail Trail2:55:51
  • 2018Trans Nantucket 3 Lighthouse Run4:19:53
02 · Pricing

Coaching Plans

One-on-one programming built around you — your lifestyle, your goals, your season.

Half/Marathon

$150/ month

UltraMarathon/Short Distance Tri

$200/ month

70.3 Triathlon

$250/ month

140.6 Triathlon

$300/ month

All clients billed monthly, on the 1st.

What's Included

All Clients will receive:

  1. 01
    Custom Workouts - 3-8 sessions a week, including strength and cross training sessions. Built to fit your lifestyle and to pursue your goals.
  2. 02
    Seamless Programming - workouts synced from Final Surge to your watch, tablet or trainer
  3. 03
    Clear and Frequent Communication - (Bi)Weekly check-ins, feedback, and adjustments
  4. 04
    Training, Race Prep, Pre/Mid/Post training and race nutrition strategies
  5. 05
    Accountability from a coach you can trust!
  6. 06
    Access to articles with most up to date training theory, recovery methods, and nutrition science
  7. 07
    In-person speed sessions with the rest of Team Tidal, on Nantucket!

Cancellation Notice

We believe in flexibility. If something isn't working for you, it's not working for us. That being the case, we believe in keeping the pricing schedule month-to-month. We also value our coaches' time, so there is a 30 day cancellation notice. Please be considerate.

04 · Contact

Let's make a plan.

05 · Articles

Notes from the field.

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