Train at the right effort
Give easy runs, quality workouts, race-pace sessions, and long runs a clear purpose so each one supports the larger plan.
Running CoachingPersonalized half & full marathon coaching
Arrive at the starting line ready for race day.
A complete race-preparation plan that connects your weekly mileage, pacing, long runs, strength, mobility, fueling, and recovery—then adjusts as your training unfolds.
Available in Lexington, Kentucky and online nationwide
A realistic place to start
Your race deserves more than a generic mileage calendar.
Successful race preparation is not just about completing more miles. Every week should balance the work that builds fitness with the recovery that lets you absorb it.
Build durable mileage
Progress training around your history and recovery while integrating strength and mobility that support—not sabotage—your running.
Practice the race before race day
Use key long runs to test pacing, fueling, hydration, gear, and the decisions you will need to make when the race gets difficult.
Personalized every week
A race plan that responds to the runner following it.
Map the build from race day backward
We establish your race goal, starting fitness, weekly availability, training history, and the key phases your build requires.
Coordinate every part of preparation
Running, strength, mobility, fueling, and recovery work together within one realistic weekly schedule.
Review, adjust, and peak
Your feedback and training data guide weekly decisions so the plan stays appropriate through the build and taper.
Coaching from Greg Barber
Experience without intimidation.
Greg helps everyday runners turn a demanding race goal into a clear weekly process. You will understand what to do, why it matters, and how to adjust without allowing one difficult workout or disrupted week to derail the entire build.
Greg is an ACE-certified personal trainer and running coach with more than 10 years of experience and more than 200 clients helped.
Meet your coachFree marathon resource
The Marathon Wall-Proof Checklist
Use this free checklist to review your pacing, fueling, long-run preparation, strength, recovery, and race-day plan before late-race fatigue exposes the gaps.
Common questions
What to know before you begin.
Can you coach me for my first marathon?
Yes. Your plan begins with your current fitness and works backward from race day. Mileage, long runs, quality workouts, strength, fueling practice, recovery, and tapering are coordinated throughout the build.
Do you coach experienced runners chasing a time goal?
Yes. Training can be structured around a realistic performance goal using your recent race results, training history, available weekly mileage, recovery, and race timeline.
How is this different from a downloadable marathon plan?
A downloadable plan stays the same. Personalized coaching changes when fatigue, soreness, weather, work, travel, or your performance indicates that a different approach will serve you better.
Does coaching include strength and fueling?
Yes. Runner-specific strength, mobility, long-run fueling, hydration, recovery, and race-day preparation are integrated with your running rather than treated as unrelated extras.
Can we work together online?
Yes. GTB Performance coaches runners online throughout the United States and also serves runners in Lexington, Kentucky.
Your next step
Start with a plan that fits your real life.
Tell me what you want to accomplish, what you have tried, and what keeps getting in the way. I’ll review your application and recommend the best next step.
COACHING APPLICATION
Tell me where you are now.
The short application helps me understand your goals, schedule, and current fitness level.
Apply for coaching No pressure. We’ll see whether coaching is a good fit.