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Training plan

16-week half marathon plan with phase checkpoints

Use a 16-week half marathon plan with a foundation phase, controlled pace practice and explicit adjustment rules.

Updated Aug 9, 2026

Compare the plan

Your path

Build the capacity

The decision this page helps you make

Use the runway to establish frequency first, then add the work that makes the half-marathon effort sustainable.

Understand this stageCalculate the first week

Your training plan

Start with the weeks, not the fine print

See what each week is trying to achieve, then choose the number of training days that fits your life. The schedule comes first; workouts, adjustments, and calculators are below it.

Start at week 1
Length
16 weeks
Frequency
3–6 days
Easy session
~45 min
Long session
~1 hr 45 min
Check readiness and safety before week 1

This plan starts from

  • • You can run 30 minutes comfortably 3–4×/week.
  • • You can complete a 60–75 minute easy session and recover normally over the next two days.
  • • You’re willing to keep easy days easy so workouts stay high-quality.

Pause and reassess when

  • • Pain that changes your gait (scale down and get assessed).
  • • A rapidly increasing injury history with volume increases.
  • • Illness symptoms that worsen with training load.

This is general training information, not medical advice.

Week by week

Your 16-week plan

Start with the first phase. Open later phases when you are ready for them. Each week shows the long session, priority work, and a load guide when one is available.

  1. Base

    Weeks 1–4

    Build consistency and durable easy volume.

  2. Build

    Weeks 5–10

    Add quality while protecting recovery.

  3. Peak

    Weeks 11–14

    Train race-specific pacing and fueling.

  4. Taper

    Weeks 15–16

    Reduce load; keep rhythm; arrive fresh.

BaseWeeks 1–4
View 4 weeks

Build consistency and durable easy volume.

Opens with: 1h long run (steady finish when recovered) · 1 cutback week

  1. Week

    1

    Base

    Build consistency and durable easy volume.

    Long session
    1h long run (steady finish when recovered)
    Priority sessions
    Strides + controlled aerobic · Hill sprints (short) + strength

    Weekly load guide: 29–47 km

  2. Week

    2

    Base

    Build consistency and durable easy volume.

    Long session
    1h 5m long run (steady finish when recovered)
    Priority sessions
    Strides + controlled aerobic · Hill sprints (short) + strength

    Weekly load guide: 30–48 km

  3. Week

    3

    Base

    Build consistency and durable easy volume.

    Long session
    1h 10m long run (steady finish when recovered)
    Priority sessions
    Strides + controlled aerobic · Hill sprints (short) + strength

    Weekly load guide: 31–50 km

  4. Week

    4

    BaseCutback

    Build consistency and durable easy volume.

    Long session
    1h 4m long run (steady finish when recovered)
    Priority sessions
    Strides + controlled aerobic · Hill sprints (short) + strength

    Weekly load guide: 32–51 km

BuildWeeks 5–10
View 6 weeks

Add quality while protecting recovery.

Opens with: 1h 20m long run (steady finish when recovered) · 1 cutback week

  1. Week

    5

    Build

    Add quality while protecting recovery.

    Long session
    1h 20m long run (steady finish when recovered)
    Priority sessions
    Tempo or cruise intervals · Long-run progression

    Weekly load guide: 33–53 km

  2. Week

    6

    Build

    Add quality while protecting recovery.

    Long session
    1h 25m long run (steady finish when recovered)
    Priority sessions
    Tempo or cruise intervals · Long-run progression

    Weekly load guide: 34–54 km

  3. Week

    7

    Build

    Add quality while protecting recovery.

    Long session
    1h 30m long run (steady finish when recovered)
    Priority sessions
    Tempo or cruise intervals · Long-run progression

    Weekly load guide: 35–56 km

  4. Week

    8

    BuildCutback

    Add quality while protecting recovery.

    Long session
    1h 21m long run (steady finish when recovered)
    Priority sessions
    Tempo or cruise intervals · Long-run progression

    Weekly load guide: 36–57 km

  5. Week

    9

    Build

    Add quality while protecting recovery.

    Long session
    1h 40m long run (steady finish when recovered)
    Priority sessions
    Tempo or cruise intervals · Long-run progression

    Weekly load guide: 37–59 km

  6. Week

    10

    Build

    Add quality while protecting recovery.

    Long session
    1h 45m long run (steady finish when recovered)
    Priority sessions
    Tempo or cruise intervals · Long-run progression

    Weekly load guide: 38–60 km

PeakWeeks 11–14
View 4 weeks

Train race-specific pacing and fueling.

Opens with: 1h 50m long run (steady finish when recovered) · 1 cutback week

  1. Week

    11

    Peak

    Train race-specific pacing and fueling.

    Long session
    1h 50m long run (steady finish when recovered)
    Priority sessions
    Threshold + speed endurance · Long run with controlled finish

    Weekly load guide: 39–62 km

  2. Week

    12

    PeakCutback

    Train race-specific pacing and fueling.

    Long session
    1h 38m long run (steady finish when recovered)
    Priority sessions
    Threshold + speed endurance · Long run with controlled finish

    Weekly load guide: 40–63 km

  3. Week

    13

    Peak

    Train race-specific pacing and fueling.

    Long session
    2h long run (steady finish when recovered)
    Priority sessions
    Threshold + speed endurance · Long run with controlled finish

    Weekly load guide: 41–65 km

  4. Week

    14

    Peak

    Train race-specific pacing and fueling.

    Long session
    2h 5m long run (steady finish when recovered)
    Priority sessions
    Threshold + speed endurance · Long run with controlled finish

    Weekly load guide: 42–66 km

TaperWeeks 15–16
View 2 weeks

Reduce load; keep rhythm; arrive fresh.

Opens with: 1h 40m long run (steady finish when recovered)

  1. Week

    15

    Taper

    Reduce load; keep rhythm; arrive fresh.

    Long session
    1h 40m long run (steady finish when recovered)
    Priority sessions
    Short tempo + strides · Easy aerobic + sleep focus

    Weekly load guide: 43–68 km

  2. Week

    16

    Taper

    Reduce load; keep rhythm; arrive fresh.

    Long session
    1h 15m long run (steady finish when recovered)
    Priority sessions
    Short tempo + strides · Easy aerobic + sleep focus

    Weekly load guide: 44–69 km

Weekly schedule

Choose the rhythm you can repeat

The phase progression stays the same. Your choice only changes how you spread the priority sessions, easy work, and recovery across the week.

4 days/week (Beginner-friendly)

4 days/week · Beginner

  • • Best if your schedule is tight or you’re building durability.
  • • Keep workouts conservative; consistency is the win.

3 days/week (Lower-frequency option)

3 days/week · Beginner

  • • Best if you’re time-limited, returning from time off, or managing impact.
  • • Protect the long run. Keep the workout controlled. Add strength on 1–2 non-run days.

5 days/week (Balanced week)

5 days/week · Intermediate

  • • A strong default: enough volume to progress, enough recovery to absorb it.
  • • One workout + one long run focus per week is plenty.

6 days/week (Advanced, recovery-dependent)

6 days/week · Advanced

  • • Only if your recovery stays stable for 2–3 weeks in a row.
  • • The extra day should be truly easy or short recovery.

Adjust the plan

What changed this week?

Open the situation that matches your week. Do not cram missed work into the next few days.

Missed workout
  • • Don’t ‘make up’ missed sessions by doubling hard days.
  • • If you miss one workout: keep the long run, skip the extra intensity.
  • • If you miss a week: repeat the last week you completed confidently.
Low sleep week
  • • Cut intensity before you cut easy volume: keep it aerobic.
  • • Shorten the long run by 15–25% if sleep is poor for multiple nights.
  • • Add one extra rest day if stress is high.
Fatigue signals
  • • If your easy pace feels hard: keep the day easy and shorten duration.
  • • If soreness persists >48h: remove the next hard session.
  • • If motivation tanks + HR drifts: treat it like a recovery week.
Pain or injury
  • • Pain that changes form is a stop signal — do not ‘push through’.
  • • Swap running for low-impact cardio until pain-free in daily life.
  • • Return with short easy runs; add intensity last.
Travel week
  • • Protect one key session: either the long run or the workout — not both.
  • • Use time-based training (minutes) when terrain/schedule changes.
  • • Keep strength micro-sessions (10–15 min) instead of skipping completely.

Workout guide

Understand the sessions in the plan

Use this as a reference when a workout name appears in your week. You do not need to read every entry before starting.

Easy aerobic run

Why: Build volume without accumulating fatigue.

Do: 30–60 min at conversational effort. If you can’t talk in full sentences, it’s too hard.

Swap with

  • • Bike or easy elliptical for the same time if impact is an issue.

Stop or scale back when

  • • Pain that changes your gait.
  • • Easy pace drifting harder to hold the same effort.
Strides + drills

Why: Improve mechanics and economy without a heavy metabolic cost.

Do: After an easy run: 6–10 × 15–20 sec fast-but-relaxed, full walk/jog recovery.

Swap with

  • • 6–8 × 20 sec hill strides for reduced impact.

Stop or scale back when

  • • Sprint-like intensity that leaves you sore.
  • • Tight hamstrings or sharp calf pain.
Tempo / cruise intervals

Why: Raise sustainable pace and teach controlled discomfort.

Do: 2–4 × 8–12 min at ‘comfortably hard’ with 2–3 min easy between.

Swap with

  • • 20–30 min steady tempo continuous if you pace well.

Stop or scale back when

  • • Breathing out of control early.
  • • Needing to ‘surge’ to hold the last reps.
Interval session (VO₂-ish)

Why: Sharpen speed and economy for faster running at a lower cost.

Do: 5–8 × 3 min hard with 2–3 min easy; stay controlled, finish with form.

Swap with

  • • 6–10 × 400m on the track with equal jog recovery.

Stop or scale back when

  • • All-out reps.
  • • Form collapse or sharp pains.
Long run (easy with structure)

Why: Build durability and rehearsals for race-day pacing and fueling.

Do: Mostly easy. When stable: finish the last 15–25 min steady (not a race).

Swap with

  • • Split long run (AM/PM) on high-stress weeks; keep total time similar.

Stop or scale back when

  • • Long-run pace creeping; next-day fatigue lasting >48h.
  • • Fueling causing repeated GI issues (adjust and practice).
Threshold + fast finish

Why: Practice the exact intensity you want to execute on race day.

Do: 3 × 10 min threshold, then 10–15 min steady finish if you’re recovered.

Swap with

  • • Progression run: easy → steady → controlled hard (only when recovered).

Stop or scale back when

  • • Needing to ‘push’ early.
  • • Shin/calf pain that escalates with pace.
Strength (short + consistent)

Why: Support durability and running economy with minimal interference.

Do: 2×/week, 20–35 min: hips, calves, hamstrings, trunk. Leave 1–2 reps in the tank.

Swap with

  • • Bodyweight circuit if you’re traveling.

Stop or scale back when

  • • Heavy DOMS that ruins key sessions.
  • • Form breakdown under load.

More guidance

Read schedule examples and special cases

Open this for day-of-week examples, run/walk options, goal-specific notes, and useful links.

Is this plan length right for you?

Sixteen weeks leaves time to establish frequency, then build threshold work and long-run durability without making both harder at once.

This plan is best for a runner with some consistent easy running who wants a measured transition into race-specific work. Before week one, confirm that the first two weeks fit current schedule and recovery. If that evidence is missing, choose the 20-week half marathon plan instead of compressing the opening phase.

Decision pointKeep the plan whenAdjust when
Opening loadThe first week resembles recent repeatable trainingThe first week would be a major jump
Key sessionone controlled quality session, the long run and easy-day separationEffort, form or normal movement deteriorates
Support workEasy volume and strength fit around the priorityRecovery cost compromises the next key day
Missed weekResume from demonstrated capacitySeveral sessions would need to be stacked

Make the first decision before adding load

Hold the opening schedule for two weeks before progressing long-run duration or controlled pace work. Record completed sessions, effort, normal movement and next-day function. Progress one major variable at a time. If a session is missed, keep the next important workout only when recovery and timing support it; do not combine two hard sessions to catch up.

Protect one controlled quality session, the long run and easy-day separation. Reduce workout repetitions or support mileage before removing the work most specific to the goal. Use the running pace calculator for calculations, then keep the result subordinate to current training evidence.

The Physical Activity Guidelines support ability-aware progression, while the systematic review on strength and running describes average evidence rather than one mandatory exercise prescription. Neither source guarantees a finish time or makes this plan medical clearance. Stop for severe symptoms or pain that changes normal movement and seek appropriate care.

How to use this plan

Choose one weekly rhythm and follow it for 2 weeks before changing it. Keep easy runs easy so you can recover from the long run and one quality session.

Sample weekly schedules (3–6 days/week)

These are example templates. You can move days around, but keep this order: workout → recovery → long run.

3 days/week (minimum effective dose)

  • Day 1: Easy run + 4–6 strides (optional)
  • Day 2: Quality workout (controlled)
  • Day 3: Long run (easy; practice fueling on longer days)

4 days/week (beginner-friendly)

  • Day 1: Easy run + short strength
  • Day 2: Quality workout (controlled)
  • Day 3: Easy run (keep it truly easy)
  • Day 4: Long run (easy; progress slowly)

5 days/week (balanced default)

  • Day 1: Easy run
  • Day 2: Quality workout
  • Day 3: Easy run + short strength
  • Day 4: Easy run (or steady when recovered)
  • Day 5: Long run

6 days/week (advanced)

  • Add one extra short recovery run (very easy).
  • Keep the number of hard sessions the same; the extra day is for aerobic volume, not intensity.

Run/walk option (allowed)

Run/walk can help you manage effort, build durability, and protect recovery.

  • Keep intensity low (conversation test).
  • Progress one variable at a time (longer run intervals before faster pace).
  • On long runs, aim for repeatable time on feet and recovery within the next 48 hours.

Guide: Run/walk marathon training plan

If you’re over 50 (masters runners)

The plan is the same; the recovery math changes.

  • Keep easy days truly easy so workouts stay effective.
  • Treat strength as part of training with 2 short sessions each week.
  • If niggles accumulate, reduce intensity first — not sleep.

Guide: Marathon training plan over 50

Training for a time goal (sub-4 / sub-2 / PRs)

Use pace tools to translate a goal into numbers — then train by effort on easy days so you can absorb the hard work.

Guide: Sub-2 hour half marathon training plan

Common glossary terms (so the plan language is clear):

Tools

Use numbers only when they help the plan

Start with the weekly schedule. Use a calculator when you need pace, fueling, cutoff, or printable-plan details.

Running pace calculatorOpen the tool with this plan’s defaults.Race time predictorOpen the tool with this plan’s defaults.
Use interactive calculators on this page
Loading pace calculator…
Loading race time predictor…

Why this structure

The principles behind the plan

  • Consistency beats hero sessions: durable aerobic volume is the engine.
  • Cutback weeks create space to absorb training before fatigue builds too far.
  • A small workout library repeated with progression is more effective than endless novelty.
  • Fueling practice is a skill — you train it like pacing.

Adaptive AI coach for iPhone

Let your coach adapt the plan.

Your adaptive AI coach reviews completed work and adjusts upcoming sessions after missed training, poor sleep, unusual fatigue, or a disrupted week.

Start training now

FAQs

Who should use 16-week half marathon plan with phase checkpoints?

It is best suited to a runner with some consistent easy running who wants a measured transition into race-specific work and whose recent training makes the opening week familiar.

What should I do after a missed week?

Resume from demonstrated capacity, preserve recovery spacing and do not stack missed hard sessions into the next week.

Should I progress when a session feels unusually hard?

Hold or reduce the load when effort, symptoms, form or next-day function shows that the current dose is not yet repeatable.

Is a 16-week half marathon plan enough time?

It can work if you already have a base. If you’re starting from scratch, extend the timeline and prioritize consistency over intensity.

How many hard sessions should I do per week?

A good default is one quality workout plus one long-run focus. If you add more, it should be short and only when recovery is stable.

What if I miss a run?

Don’t cram. Keep the next session easy, protect the long run, and resume structure when your legs feel normal again.

How do I keep easy runs truly easy?

Use a conversational effort check: you should be able to talk in full sentences. If not, slow down or add walk breaks.

Do I need strength training?

Two short strength sessions per week can support durability. Keep them consistent and avoid soreness before key runs.

When should I practice fueling?

For half marathons, fueling is simpler, but practicing hydration and pre-run carbs still helps you race consistently.

Keep going

20-Week Half Marathon Plan: A Gradual Build for Consistency

Use a 20-week half marathon plan to stabilize running frequency before progressing long-run and threshold demands.

Open guide

Running Pace Calculator (with Splits)

Convert distance and time into pace per kilometre or mile and generate a splits table for workouts and race planning.

Open guide

Strength Training for Endurance Athletes: Evidence Lab

Review systematic evidence on strength training for endurance performance, then translate it into a minimal, recoverable weekly decision.

Open guide

Sources