FIRST OR FASTEST Coach’s Corner
Training With Purpose

Train Where You Are

Understanding your training phases, the workouts that belong in them, and why the right workout changes as race day gets closer.

Every workout has a purpose. Your training changes as you move toward race day. Some workouts appear throughout training; others become more important during certain phases. Knowing what a workout is for helps you execute it correctly.

The Road to Race Day

Your training generally progresses through four phases. The exact timing depends on your race distance, experience, fitness and individual plan.

EARLY BUILD
BUILD
PEAK
TAPER
RACE DAY

Common Training Workouts

“Typically used” does not mean “only used.” Workouts can cross phases. Your coach uses them according to the purpose of your plan.

WorkoutTypically UsedPurposeHow to ExecuteAdaptation
Easy RunAll phasesBuild fitness with low stressComfortable, conversational effortAerobic efficiency; capillary and mitochondrial development
Long RunEarly Build, Build, PeakBuild endurance and durabilityMostly easy, controlled effort; gradually increase durationAerobic endurance; fat utilization; fatigue resistance
Recovery RunAll phasesRecover while staying activeVery easy and relaxedAerobic maintenance
StridesAll phasesMaintain speed and good mechanics15–30 sec. relaxed accelerations with full recoveryNeuromuscular coordination; running economy
Hill RepeatsEarly Build, Build, PeakBuild strength and powerStrong, controlled uphill efforts; easy recoveryMuscular strength; power; aerobic capacity; running economy
Tempo / ThresholdBuild, PeakSustain stronger efforts longerComfortably hard and controlled — never racingLactate threshold; aerobic endurance
Progression RunBuild, PeakRun stronger as fatigue developsStart easy; gradually increase effortAerobic endurance; fatigue resistance; pace control
IntervalsBuild, PeakDevelop speed and aerobic capacityFaster repeats separated by recoveryVO₂ max; running economy; speed
Race-Pace WorkBuild, Peak, TaperDevelop feel for race effortControlled segments at planned race effortRunning economy; pacing; race-specific endurance

Understanding Your Training Phases

EARLY BUILD — Build the Foundation

Consistency comes first. Develop aerobic fitness, durability and your training routine before adding greater demands. Easy running, gradually increasing long runs, strides and strength-focused hills can play an important role.

BUILD — Add Endurance & Quality

Training volume and long-run duration increase. Purposeful harder workouts are added or expanded to develop the systems you'll need on race day. Long runs, tempo work, progression runs, hills and intervals may all have a place here.

PEAK — Put the Work Together

These are some of your biggest and most important training weeks. Long runs and quality workouts become increasingly important, but more is not always better. The goal is maximum useful training — not maximum exhaustion.

Don't leave your PR on the training course.

TAPER — Shed Fatigue, Not Fitness

The work is done. Training volume decreases while some shorter quality work remains to maintain fitness and keep your legs sharp. Taper isn't about gaining more fitness. It's about allowing the fitness you've built to show up on race day.

Glossary: What Do Those Adaptations Mean?

Aerobic Capacity: How much oxygen your body can take in, transport and use during exercise. Improving it helps you sustain harder efforts.

Aerobic Efficiency: Your ability to run at a given effort while using less energy and oxygen. Simply put: the same pace begins to feel easier.

Aerobic Endurance: Your ability to keep producing energy aerobically for a long time — a foundation of half- and full-marathon performance.

Aerobic Maintenance: Training that helps preserve the aerobic fitness you've developed without adding significant stress.

Capillary Development: Development of tiny blood vessels around working muscles, improving delivery of oxygen and nutrients.

Fat Utilization: Your body's ability to use fat for energy during longer, lower-intensity exercise, helping conserve carbohydrate stores.

Fatigue Resistance: Your ability to maintain effort, pace and good running form as a workout or race gets longer.

Lactate Threshold: The effort at which lactate begins accumulating faster than your body can manage it. Improving your threshold helps you run faster for longer before fatigue rises sharply.

Mitochondrial Development: Mitochondria are the energy-producing structures inside your cells. Endurance training increases their number and effectiveness, improving aerobic energy production.

Muscular Strength: Your muscles' ability to produce force. Running-specific strength helps improve durability and maintain good form.

Neuromuscular Coordination: How effectively your brain, nerves and muscles work together, helping your running become smoother and more efficient.

Pace Control: Your ability to recognize and maintain an appropriate pace or effort without starting too fast or allowing unnecessary fluctuations.

Power: Your ability to produce force quickly. Hills and faster running can improve the force produced with each stride.

Race-Specific Endurance: Your ability to sustain the effort and movement required for your particular race distance.

Running Economy: How much energy and oxygen you use at a given running speed. Better economy means running the same pace at a lower energy cost.

Speed: Your ability to run faster. Faster training also helps recruit muscle fibers and improve mechanics.

VO₂ Max: The maximum amount of oxygen your body can use during intense exercise. It is one measure of aerobic fitness.

Remember

Run by effort, not somebody else's pace. This is especially important on hills, in heat and when fatigue is part of the workout.

Trust your plan. Don't add miles or intensity just because you feel good — and don't try to “make up” missed workouts.

Every workout has a purpose.

And don't forget the most important workout of all: REST. Rest is training too.