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Coach Gareth
Two endurance athletes on a training run
Coaching

World-class coaching for endurance athletes of all abilities

Coach and sports scientist — the “Lactate Guru”. Coach to world & national champions · 30+ years.

  • Triathlon
    including Ironman
  • Running
    marathon and ultra
  • Cycling
    road, gravel and track
  • Longevity
    training to stay strong for decades

Sport-specific monthly coaching & consulting

Gold

$300
per month
  • 360° custom program
  • Strength, mobility & core
  • Bi-weekly data review
  • Text & email support
  • Monthly call review
Enquire

Platinum

$600
per month
  • 360° custom program
  • Strength, mobility & core
  • Weekly data review
  • Text, email & phone support
  • Bi-weekly call review
Enquire

VIP

$900
per month
  • 360° custom program
  • Strength, mobility & core
  • Twice-weekly data review
  • Text, email & phone support
  • Weekly call review
  • A one-to-one workout session
  • Custom food & fuel planning
Enquire
Day to day

How coaching works

Every workout is uploaded to TrainingPeaks and can be pushed straight to your watch for in-workout guidance. After each session the data comes back automatically, along with sleep and health data from your wearable, and Gareth reviews it at the frequency your tier sets.

You can leave notes on energy, stress or travel as you go. Contact happens by call, video, text and email, again depending on tier. Every athlete trains with a heart-rate monitor and keeps a daily training journal.

Gareth Thomas coaching two swimmers on the pool deckAn endurance athlete at the finish of a triathlon
Other options

Plans, programs and one2one sessions

Monthly coaching is the main path. These are the store items that already sell — buy them outright, no call required.

18-week marathon training plans

Complete 18-week training plans. Scientifically proven run workouts, integrated strength training, a video library for injury prevention and recovery, a hydration and fueling guide, and a pacing guide. The PDFs are emailed the moment payment clears — train the same day.

A plan on its own. It does not include ongoing consulting or interaction with Gareth.

  • Beginner
    3–4 runs per week. Starts at 10–15 miles per week and peaks at 30–40 (up to 8 hours per week).
    PDF, emailed instantly
    $29Buy
  • Sub 4 hours
    4 runs per week. Starts at 15–20 miles per week and peaks at 40–45 (up to 8 hours per week).
    PDF, emailed instantly
    $29Buy
  • Sub 3:30
    4–5 runs per week. Starts at 20–25 miles per week and peaks at 45–50 (up to 10 hours per week).
    PDF, emailed instantly
    $29Buy
  • Sub 3 hours
    5+ runs per week. Starts at 20–25 miles per week and peaks at 50–60 (up to 10 hours per week).
    PDF, emailed instantly
    $29Buy

Custom 12-week training programs

A custom training program for the self-motivated athlete with a specific race goal. Daily sessions for endurance, mobility, recovery and strength, plus articles on nutrition, recovery, mental training and race preparation. Delivered as an interactive PDF or straight into TrainingPeaks, with Zwift, TrainingPeaks Virtual and Garmin workouts where they apply. After purchase Gareth sends a Q&A so he can build the plan around you.

Built for you once. It does not include ongoing consulting or interaction with Gareth — that is monthly coaching.

  • Running
    A 12-week custom running program built around your goal race.
    PDF or TrainingPeaks
    $295Buy
  • Cycling
    A 12-week custom cycling program built around your goal event.
    PDF or TrainingPeaks
    $295Buy
  • Triathlon
    A 12-week custom triathlon program across all three disciplines.
    PDF or TrainingPeaks
    $295Buy

One2one sessions

Single sessions, bought in advance. After purchase Gareth reaches out to set the appointment.

  • Online consultation
    One2one consulting on any athletic need, over Google Meet, Zoom, FaceTime or phone.
    60 minutes · Booked with Gareth after purchase
    $200Buy
  • Swim video coaching
    In-person one2one swim coaching with video analysis of your stroke and a drills prescription.
    60 minutes · Booked with Gareth after purchase
    $200Buy
  • Run technique coaching
    One2one session with video analysis of your stride and a technical drills workout.
    60 minutes · Booked with Gareth after purchase
    $175Buy
  • Race fueling Q&A
    An online discussion plus a prescription for drinks, gels and supplements for training, racing and recovery.
    30 minutes · Booked with Gareth after purchase
    $150Buy

Nutrition coaching for endurance athletes

A three-month overhaul of food, fueling and supplementation — body composition, immune health, race fuel and training fuel. It starts with an in-depth analysis of current diet, gut and health issues, including supplements and race fuels, then a custom prescription and food rotation plan. Bi-weekly 15-minute follow-up calls and a 30-minute three-month check-in keep it on track.

  • 3-month nutrition coaching
    Includes an in-person RMR test at the Santa Monica lab for local athletes.
    Three months, starting with an intake call
    $750Buy

Prices are in US dollars and checkout is handled by Square. Plans are emailed on payment; sessions and programs start with Gareth getting in touch to set them up. Not sure which one fits? Call (858) 361-4733.

The lab

Plans built from lab data

Coaching starts from numbers measured in the lab, not a formula. Most people begin with a test at ECLYPSE Fitness Lab, then retest every9–12 weeks so the work stays on the physiology you actually have.

Questions

Before you
enquire

Still not sure? Call (858) 361-4733. There's no sales pitch — if a test isn't worth it for you, he'll say so.

Coaching
How does coaching work day to day?

Every workout is uploaded to TrainingPeaks and can be pushed straight to your watch for in-workout guidance. Your data uploads back automatically after each session, along with sleep and health data from your wearable, and Gareth reviews it at the frequency your tier sets. You can leave notes on energy, stress or travel as you go. Contact happens by call, video, text and email, again depending on tier. Every athlete trains with a heart-rate monitor and keeps a daily training journal.

Do I need to live in Los Angeles, or even the USA, to be coached?

No. Gareth coaches athletes all over the world, many of whom travel constantly. Most come to the lab in Santa Monica for their initial testing, and where that is not possible he arranges testing with a provider local to you so the programme still starts from real data.

What equipment do I need?

The essentials are the basic kit for your sport plus a heart-rate monitor with a chest strap. Ideally you would also have a sleep tracker such as an OURA ring or WHOOP, a power meter if you ride, an indoor trainer, and access to a gym, a track or treadmill, and regular massage or chiropractic care. A budget for fuel and supplements matters too.

I am never going to win anything, but I want to be my best. Can I still apply?

Yes. Gareth works with driven people who want to reach their true potential, whatever level that starts from. Wanting to be excellent matters more than what you can currently do.

I hate racing but I want to train properly. Is that OK?

Yes. Training seriously without racing is a superb way to stay fit and in prime condition, and it is how Gareth lives himself. Plenty of the athletes he coaches never pin on a number.

My time is limited. Can I still get somewhere on an hour a day?

Yes. You will struggle with the longest races on that budget, and Gareth will tell you so honestly. But an hour a day, programmed properly around your actual life, goes a very long way — and building the plan around the time you genuinely have is the whole point.

Enquire

Start a plan

Monthly coaching starts with a conversation — he will tell you which tier actually fits. Marathon plans, custom programs and one2one sessions can be bought above.

1736 Ashland Avenue, Santa Monica, CA 90405