Pacing
Set an opening pace and effort ceiling that protects the final 10K.
Running CoachingFree marathon resource
Stop leaving your final 10K to chance.
The Marathon Wall-Proof Checklist helps you identify the pacing, fueling, training, and recovery gaps that can turn a strong start into a late-race breakdown.
Free PDF • No complicated formulas • Built for everyday marathon runners
FREE DOWNLOADThe wall is a symptom
It usually starts before mile 20.
Late-race fatigue is not always a toughness problem. Starting too fast, fueling too late, inconsistent long-run preparation, and poor recovery can quietly compound until the race exposes them.
“The goal is not to hope you feel good at mile 20. It is to practice the decisions that give you the best chance to finish well.”
Inside the checklist
Four areas that can make or break your marathon.
Fueling
Build a practiced carbohydrate and hydration schedule before race day.
Durability
Review the consistency, long runs, strength, and recovery supporting your goal.
Race day
Turn your strategy into simple decisions you can follow when fatigue arrives.
Built for your next race
This is for you if...
- You are training for your first marathon and are unsure whether your plan covers everything.
- Your long runs or previous races have fallen apart after mile 15-20.
- You are guessing about pace, gels, fluids, strength, or tapering.
- You want a simple race-preparation review without another generic training calendar.
Created by Coach Greg Barber
Prepare the whole runner—not just the mileage.
Greg is an ACE-certified personal trainer and running coach with more than 10 years of experience and more than 200 clients helped. GTB Performance brings running, pacing, fueling, runner-specific strength, recovery, and weekly accountability into one complete race-preparation system.
Explore personalized marathon coachingYour stronger finish starts here
Find the gaps before race day does.
Download the checklist, review your current plan, and choose one area to improve during your next long run.