- You want to know how many months of training it takes to finish a full marathon
- You’re not sure how often or how far to run each week to break 4:00 or 3:30
- You want a concrete training plan and pace targets for your specific goal time
The most common question in marathon training is how much time, volume, and intensity you actually need. A beginner aiming just to finish needs a completely different plan than an intermediate runner chasing a 3:30.
This article covers four goal-time tiers — from finishing to sub-3:30 — with the prep time, weekly mileage, and weekly schedule for each. It’s built on data from 119,452 runners※1 and Jack Daniels’ training theory※2.
If you’re targeting sub-3:00 or faster, see Sub-3 Marathon Training instead.
I started running seriously after entering the workforce.
With theory-based training,
I challenge myself to see how far I can improve my record.
I am working on it with a competitive mindset
About me & PB history
Blood lactate concentration and blood glucose levels are also measured.
This is a scientific approach to marathon running.
★Personal bests
1500m 4:25(2022/08)
5000m 16:01(2022/09)
10000m 33:44(2021/12)
Half 1:12:29(2022/03)
Full 2:40:15(2026/03)
I started running seriously after entering the workforce.
With theory-based training,
I challenge myself to see how far I can improve my record.
I am working on it with a competitive mindset
About me & PB history
Blood lactate concentration and blood glucose levels are also
measured.
This is a scientific approach to marathon running.
★Personal bests
1500m 4:25(2022/08)
5000m 16:01(2022/09)
10000m 33:44(2021/12)
Half 1:12:29(2022/03)
Full 2:40:15(2026/03)
Confirm Your Goal Time and Prep Timeline First
Before you start training, confirm what you’re aiming for and whether you have enough time to get there. The table below breaks down difficulty, prep time, and baseline fitness by goal time.
| Goal Time | Race Pace | Typical Prep Time | Baseline Fitness | Difficulty |
|---|---|---|---|---|
| Finish (sub-5:30) | 12:36/mile (7:50/km) or faster | 4–6 months | Can run continuously for 30 min | Beginner |
| Sub-5:00 | 11:26/mile (7:06/km) | 6+ months | Can jog for 60 min | Novice |
| Sub-4:30 | 10:18/mile (6:24/km) | 6 months–1 year | Can run 10K 2–3x/week | Low intermediate |
| Sub-4:00 | 9:09/mile (5:41/km) | 1+ year | Roughly a sub-2:00 half marathon | Intermediate |
| Sub-3:30 | 8:00/mile (4:58/km) | 1–2 years | Multiple full marathon finishes | Advanced |
These prep times are only rough guidelines — they vary a lot based on your current fitness, training frequency, and age. To judge whether you can be ready for a race a certain number of months from now, compare your current fitness against the baseline column above.
- If your race is less than 3 months away, make finishing your top priority
- If you’ve never run a half marathon, work up to sub-4:00 gradually — finish first, then sub-4:30
- If sub-4:00 feels out of reach, locking in sub-4:30 first is the fastest route to it
3 Principles Behind Every Full Marathon Plan
These three principles apply no matter your goal time. Without understanding them, no amount of training will be efficient.
Principle 1: Build Up Volume
A study analyzing 119,452 marathon runners found a very strong correlation between training volume and marathon time※1. In other words, mileage is the single factor most directly tied to your result.
A study of 917 Boston Marathon finishers found that, for both men and women, weekly mileage of 64–68 km was statistically associated with faster times※3. In other words, if you can sustain 60–70 km a week, you’re setting yourself up for a good time.
| Goal Time | Typical Monthly Mileage | Typical Weekly Mileage |
|---|---|---|
| Finish / Sub-5:00 | 100–150 km | 25–35 km |
| Sub-4:30 | 160–200 km | 40–50 km |
| Sub-4:00 | 200–260 km | 50–65 km |
| Sub-3:30 | 260–350 km | 65–85 km |
That said, you can’t ramp up mileage overnight. To avoid injury, the standard rule is to increase weekly mileage by no more than 10% over the previous week.
Principle 2: 80% of Your Training Should Be Easy
Research on elite runners found that top athletes run roughly 80% of their sessions at a blood lactate level under 2 mmol/L — a conversational pace, or E-pace※4. The idea that “harder is always better” is wrong; easy running is what actually builds your marathon base.
A 16-week study of 120 recreational runners found a pyramidal pattern (mostly low intensity with some moderate work) worked better for beginners, while a polarized pattern (low and high intensity, with little in between) worked better for experienced runners※5. In short, matching your intensity distribution to your experience level is what maximizes results.
- E-pace (Easy pace): A conversational jogging pace, roughly 65–75% of max heart rate
- M-pace (Marathon pace): Your goal marathon race pace — a bit faster than E-pace
- T-pace (Threshold pace): Your tempo/threshold pace — as fast as you can sustain for 20–30 minutes
- I-pace (Interval pace): Interval pace — close to all-out effort for 3–5 minutes
Principle 3: Structure Training Into 3 Phases
Marathon training works best when planned backward from race day into three phases spanning roughly 16–24 weeks.
| Phase | Typical Timing | Main Focus | Purpose |
|---|---|---|---|
| Phase 1: Base Building | 12–16 weeks out | Mostly E-pace runs and long runs | Build aerobic base and mileage |
| Phase 2: Build | 6–12 weeks out | Add M-pace and threshold runs | Build marathon-specific fitness |
| Phase 3: Taper | 3 weeks out to race day | Gradually reduce volume | Recover and peak for race day |
Finish or Sub-5:00: A 16-Week Program for Beginners
- Prep time: 4–6 months (a 16-week program)
- Weekly mileage: 25–50 km by the end of the program
- Baseline: You’ve never run before, or you’re just getting started
The 16-week program below is based on the White Program in Jack Daniels’ Running Formula, 4th edition※2. It’s split into four steps that gradually extend your running time.
Aim for 3–4 sessions a week. Spreading 3–4 runs across 7 days with rest days in between supports recovery and adaptation better than running 3 days in a row. If a step starts feeling too easy, you can move on to the next one.
Step 1 (Weeks 1–4): Alternating Walking and Running
Run at a pace where you can still talk. It should feel almost effortless.
| Day | Workout | Time |
|---|---|---|
| 1 | 5-min walk, (1-min run + 1-min walk) x10, 5-min walk | 30 min |
| 2 | Rest | — |
| 3 | 5-min walk, (2-min run + 1-min walk) x7, 5-min walk | 31 min |
| 4 | Rest | — |
| 5 | 5-min walk, (1-min run + 30-sec walk) x15, 5-min walk | 32.5 min |
| 6 | Rest | — |
| 7 | 5-min walk, (3-min run + 1-min walk) x5, 5-min walk | 30 min |
Step 2 (Weeks 5–8): Extending to 40 Minutes of Running
Even if you feel like you could push further, don’t jump your running time up all at once. Running too much before your body adapts can lead to knee pain and other issues. Keep the same “can still talk” pace as Step 1.
| Day | Workout | Time |
|---|---|---|
| 1 | 5-min walk, (3-min run + 2-min walk) x6, 5-min walk | 40 min |
| 2 | Rest | — |
| 3 | 5-min walk, (4-min run + 1-min walk) x6, 5-min walk | 40 min |
| 4 | Rest | — |
| 5 | 5-min walk, (1-min run + 30-sec walk) x20, 5-min walk | 40 min |
| 6 | Rest | — |
| 7 | 5-min walk, (3-min run + 1-min walk) x10, 5-min walk | 50 min |
Step 3 (Weeks 9–12): Up to 20 Minutes of Continuous Running
By Step 3, your continuous running time grows substantially. Even if you feel like running more, resist the urge to increase too quickly.
| Day | Workout | Time |
|---|---|---|
| 1 | 5-min walk, 12-min run, 5-min walk, 12-min run, 5-min walk | 39 min |
| 2 | Rest | — |
| 3 | 5-min walk, (10-min run + 2-min walk) x3, 5-min walk | 46 min |
| 4 | Rest | — |
| 5 | 5-min walk, 15-min run, 5-min walk, 15-min run, 5-min walk | 45 min |
| 6 | Rest | — |
| 7 | 5-min walk, 20-min run, 5-min walk, 10-min run, 5-min walk | 45 min |
Step 4 (Weeks 13–16): Mostly Running
In Step 4, you’ll run through almost the entire session. Once you can handle this step, you’ve built the fitness foundation needed to finish a full marathon.
| Day | Workout | Time |
|---|---|---|
| 1 | 5-min walk, 30-min run, 5-min walk | 40 min |
| 2 | Rest | — |
| 3 | 5-min walk, 40-min run, 5-min walk | 50 min |
| 4 | Rest | — |
| 5 | 5-min walk, 20-min run, 5-min walk, 20-min run, 5-min walk | 55 min |
| 6 | Rest | — |
| 7 | 5-min walk, (10-min run + 2-min walk) x3, 5-min walk | 46 min |
Once you’re comfortable with Step 4, you’re ready to move on to the “Beyond Beginner” schedule below. If you want to push for a faster time, check out the sub-4:30 section.
Beyond Beginner: A Weekly Schedule
This weekly schedule is for runners who’ve mastered Step 4 without issue. It’s based on the Red Program in Jack Daniels’ Running Formula, 4th edition※2.
| Day | Workout | Purpose |
|---|---|---|
| Mon | Rest | — |
| Tue | E-pace run, 60 min | Build aerobic base |
| Wed | 15-min E + 20-min T-pace + 15-min E | Raise lactate threshold |
| Thu | Rest | — |
| Fri | E-pace run, 60 min | Build aerobic base |
| Sat | E-pace run, 40 min | Recovery run |
| Sun | Long run (E-pace), 90–120 min | Build fat-burning capacity, guard against the wall |
For a detailed breakdown of each pace, see the related articles below.
Sub-4:30: Training Plan and Weekly Schedule
- Prep time: 6 months to 1 year
- Weekly mileage: 40–50 km at peak
- Baseline: You can run 10K 2–3x/week, with 6+ months of running experience
Sub-4:30 means holding 10:18/mile (6:24/km) for the full 42.195 km. The key is stacking up E-pace mileage while adding one M-pace run per week.
Target Paces (Sub-4:30)
| Pace | Pace (mile / km) | Feel |
|---|---|---|
| E-pace (jog) | 11:24–12:12/mile (7:05–7:35/km) | Conversational |
| M-pace (marathon pace) | 10:18/mile | Race pace |
| T-pace (threshold) | 9:07–9:23/mile (5:40–5:50/km) | As fast as you can hold for 20–30 min |
Weekly Schedule (Sub-4:30)
| Day | Workout | Approx. Distance | Purpose |
|---|---|---|---|
| Mon | Rest | — | — |
| Tue | E-pace run, 50 min | 7–8 km | Aerobic base |
| Wed | Rest | — | — |
| Thu | E-pace run, 50 min | 7–8 km | Aerobic base |
| Fri | Rest | — | — |
| Sat | 10-min E + 25–30 min M-pace + 10-min E | 10–12 km | Adapt to marathon pace |
| Sun | Long run (E-pace), 90–110 min | 14–17 km | Fat-burning, guard against the wall |
The long run (Sunday) is the single most important workout in this phase. A study analyzing 4 million marathon data points found that many runners hit a sharp pace drop-off past 30 km — the “30K wall”※6.
Building fat-burning capacity through long runs, and learning to run in a way that conserves glycogen, is your defense against the wall.
- Stick strictly to a “can still talk” pace on E-pace runs — running them too fast leaves you fatigued and lowers the quality of your key workouts
- Start M-pace runs at 15–20 minutes and gradually extend from there
- Being able to complete one or two 30 km (or 3-hour) long runs builds real confidence heading into race day
Sub-4:00: Training Plan and Weekly Schedule
- Prep time: 6 months to 1 year (assuming you already have an E-pace base)
- Weekly mileage: 50–65 km at peak
- Baseline: A sub-2:00 half marathon and a full marathon finish (or equivalent fitness)
Sub-4:00 means holding 9:09/mile (5:41/km). At this level, E-pace runs alone aren’t enough — you need quality work that combines threshold (T-pace) runs and M-pace runs.
A study of recreational runners found that Zone 2 volume (roughly equivalent to M-pace) was the factor most strongly linked to marathon time※7. Adding one M-pace run per week is the key to breaking 4:00.
Target Paces (Sub-4:00)
| Pace | Pace (mile / km) | Feel |
|---|---|---|
| E-pace (jog) | 10:15–11:03/mile (6:22–6:52/km) | Conversational |
| M-pace (marathon pace) | 9:09/mile | Race pace |
| T-pace (threshold) | 8:03–8:19/mile (5:00–5:10/km) | As fast as you can hold for 20–30 min |
Weekly Schedule (Sub-4:00)
| Day | Workout | Approx. Distance | Purpose |
|---|---|---|---|
| Mon | Rest | — | — |
| Tue | E-pace run, 60 min | 9–10 km | Aerobic base |
| Wed | 15-min E + 20–25 min T-pace + 10-min E | 8–9 km | Raise lactate threshold |
| Thu | Rest | — | — |
| Fri | E-pace run, 60 min | 9–10 km | Aerobic base |
| Sat | 10-min E + 20–25 min M-pace + 10-min E | 15–18 km | Adapt to marathon pace |
| Sun | Long run (E-pace), 110–130 min | 18–22 km | Fat-burning, guard against the wall |
Raising your lactate threshold (LT) through the Wednesday threshold run is directly tied to breaking 4:00. Multiple studies show LT speed is the single strongest predictor of marathon time※8※9. If you’re unsure how to set your threshold pace, see the related articles below.
Sub-3:30: Training Plan and Weekly Schedule
- Prep time: 1–2 years
- Weekly mileage: 65–85 km at peak
- Baseline: Multiple full marathon finishes, with times around 4:00 or faster
Sub-3:30 means holding 8:00/mile (4:58/km) — roughly top-20% territory among marathon finishers. On top of E-pace, M-pace, and threshold work, adding one interval session per week raises VO2max and opens the door to further time gains.
Target Paces (Sub-3:30)
| Pace | Pace (mile / km) | Feel |
|---|---|---|
| E-pace (jog) | 9:07–9:55/mile (5:40–6:10/km) | Conversational |
| M-pace (marathon pace) | 8:00–8:03/mile (4:58–5:00/km) | Race pace |
| T-pace (threshold) | 7:02–7:11/mile (4:22–4:28/km) | As fast as you can hold for 20–30 min |
| I-pace (interval) | 6:20–6:29/mile (3:56–4:02/km) | Close to all-out for 3–5 min |
Weekly Schedule (Sub-3:30)
| Day | Workout | Approx. Distance | Purpose |
|---|---|---|---|
| Mon | Rest | — | — |
| Tue | E-pace run, 60–70 min | 10–12 km | Aerobic base |
| Wed | 15-min E + 25–30 min T-pace + 10-min E | 10–11 km | Raise lactate threshold |
| Thu | E-pace run, 60–70 min | 10–12 km | Aerobic base |
| Fri | Rest or 40-min E-pace run | up to 6 km | Recovery |
| Sat | 10-min E + 20–25 min M-pace + 10-min E (optional intervals) | 20–25 km | Marathon-specific strength |
| Sun | Long run (E-pace), 120–150 min | 22–28 km | Fat-burning, guard against the wall |
With higher weekly mileage at this level, managing recovery matters. Always take Monday off, and don’t be afraid to rest on Friday too if you need it. For more on interval training and threshold runs, see the articles below.
Tapering Before Race Day
Gradually cutting your training volume in the 3 weeks before race day — tapering — is essential for maximizing your performance.
A meta-analysis pooling 27 studies found that a well-executed taper can improve performance by roughly 3%※10. In other words, tapering correctly alone can be worth 3–4 minutes off your time.
A study analyzing over 158,000 recreational runners found that those who followed a disciplined 3-week taper were a median of 5:32 (2.6%) faster※11.
The Basic Principles of Tapering
- Cut volume: Reduce mileage down to 40–60% of your peak, decreasing steadily week by week
- Keep intensity: Continue M-pace and T-pace work without dropping quality
- Keep frequency: Don’t cut the number of sessions — only cut the volume
The most common mistake is dropping intensity along with volume. Running only at easy paces during the taper lets your body go flat. The right approach is to keep your usual paces and shorten only the distance.
Sample Taper Schedule
| Before Race Day | Volume | Main Workouts |
|---|---|---|
| 3 weeks out | ~70% of peak | Normal training, final long run (20–25 km) |
| 2 weeks out | ~50% of peak | Mostly E-pace, M-pace runs of around 10–15 km |
| 1 week out | ~30% of peak | Light E-pace runs only; more rest starting 3 days out |
Race Day: Pacing Strategy and Fueling
Pacing: Starting Too Fast Is Your Biggest Risk
Most marathon meltdowns come down to going out too fast in the first half. An analysis of 4 million data points found that runners who started fast were far more likely to slow dramatically in the second half※6.
On race day, start at a pace where you could still hold a light conversation — somewhere between E-pace and M-pace. Running the first 5 km 5–10 seconds/km slower than goal pace, then checking how you feel before pushing on, is the safer approach.
Fueling: Make the Most of Aid Stations
The rule for hydration is to drink before you’re thirsty. Aid stations are there for everyone — use them.
- Take fluids at roughly every aid station (every 5 km) — waiting until you’re thirsty is too late
- If you’re targeting sub-4:00 or faster, carry your own gels and take one every 10–15 km
- Test your fueling brand and amount in training — never try something new on race day
Off the Course: Diet, Sleep, and Self-Care
How you spend your time outside of training matters just as much for the quality of your workouts.
- Diet: Get enough carbohydrates around high-intensity sessions especially. On moderate-to-easy days, moderate fat intake is fine too
- Sleep: Get 7–8 hours. Sleep deprivation raises RPE, making the same pace feel harder than it should
- Self-care: Use post-run stretching, icing when needed, and recovery wear to support recovery
- Injury prevention: Knee pain, IT band syndrome, and plantar fasciitis are mostly caused by overtraining and the wrong shoes. Rest early if something feels off
Resting when you’re sore or tired is part of training too. Staying consistent over the long run is what actually drives your time down.
Ready to Aim Higher?
If you’ve hit sub-3:30 and want to push for sub-3:00 next, check out the dedicated article below. Sub-3:00 puts you in roughly the top 3–5% of all marathon finishers and calls for a more advanced training design.
References
※1 Muniz-Pumares D, et al. The Training Intensity Distribution of Marathon Runners Across Performance Levels. Int J Sports Physiol Perform. 2025. PMID: 39616560
※2 Daniels J. Daniels’ Running Formula, 4th edition. Human Kinetics, 2022.
※3 DeJong Lempke LB, et al. Training Volume and Training Frequency Changes Associated with Boston Marathon Race Performance. Int J Sports Physiol Perform. 2025. PMID: 40913707
※4 Seiler S. What is best practice for training intensity and duration distribution in endurance athletes? Int J Sports Physiol Perform. 2010. PMID: 20861519
※5 Qin Y, et al. Machine learning-based personalized training models for optimizing marathon performance through pyramidal and polarized training. Sci Rep. 2025. PMID: 41286008
※6 Smyth B. More than 26.2 miles from submission to success. Front Physiol. 2021. PMID: 34010308
※7 Bonato M, et al. Training Intensity Distribution, Load Management, and Performance in Recreational Long-Distance Runners. IJERPH. 2026. PMID: 41765005
※8 Sjödin B, Svedenhag J. Applied physiology of marathon running. Sports Med. 1985. PMID: 3890068
※9 Bassett DR, Howley ET. Limiting factors for maximum oxygen uptake and determinants of endurance performance. Med Sci Sports Exerc. 2000. PMID: 10647532
※10 Bosquet L, et al. Effects of tapering on performance: a meta-analysis. Med Sci Sports Exerc. 2007. PMID: 17762369
※11 Smyth B, Lawlor A. Longer Disciplined Tapers Improve Marathon Performance for Recreational Runners. Front Sports Act Living. 2021. PMID: 34651125
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