Who Is This Plan For?
This 16-week beginner marathon training plan is designed for runners who can currently: - Run 5–6km continuously without stopping - Complete 3–4 runs per week - Have at least 12–16 weeks before race day
If you're not yet running 5km continuously, complete an 8-week base-building phase first (build to 30–40km/week with a 15km long run) before starting Week 1.
The Core Principles of This Plan
1. 80/20 intensity distribution — 80% of runs are Easy (Zone 1–2 heart rate, conversational pace). Only 20% includes faster work. This mirrors the training patterns of elite marathon runners and is supported by Seiler's polarized training research.
2. Long run progression — The long run builds from 16km to a peak of 32km (20 miles), following a 3-week progressive overload + 1-week recovery cycle.
3. No more than 10% weekly volume increase — Exceeding this rate dramatically increases injury risk. The plan builds volume gradually to allow connective tissue adaptation, which lags 3–4 weeks behind cardiovascular adaptation.
16-Week Marathon Training Schedule
Phase 1: Base Building (Weeks 1–4)
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Total |
|---|---|---|---|---|---|---|---|---|
| 1 | Rest | Easy 6km | Easy 8km | Rest | Easy 6km | Rest | Long 16km | 36km |
| 2 | Rest | Easy 6km | Easy 8km | Rest | Easy 6km | Rest | Long 19km | 39km |
| 3 | Rest | Easy 8km | Easy 10km | Rest | Easy 8km | Rest | Long 22km | 48km |
| 4 | Rest | Easy 6km | Easy 8km | Rest | Easy 6km | Rest | Long 16km | 36km (recovery) |
Phase 2: Development (Weeks 5–8)
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Total |
|---|---|---|---|---|---|---|---|---|
| 5 | Rest | Easy 8km | Tempo 10km | Rest | Easy 8km | Rest | Long 24km | 50km |
| 6 | Rest | Easy 8km | Tempo 11km | Rest | Easy 8km | Rest | Long 26km | 53km |
| 7 | Rest | Easy 10km | Tempo 11km | Rest | Easy 8km | Rest | Long 28km | 57km |
| 8 | Rest | Easy 6km | Easy 8km | Rest | Easy 6km | Rest | Long 19km | 39km (recovery) |
Phase 3: Peak Training (Weeks 9–12)
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Total |
|---|---|---|---|---|---|---|---|---|
| 9 | Rest | Easy 10km | Tempo 13km | Rest | Easy 8km | Rest | Long 29km | 60km |
| 10 | Rest | Easy 10km | Tempo 13km | Rest | Easy 10km | Rest | Long 31km | 64km |
| 11 | Rest | Easy 10km | Tempo 14km | Rest | Easy 10km | Rest | Long 32km | 66km |
| 12 | Rest | Easy 6km | Easy 8km | Rest | Easy 6km | Rest | Long 22km | 42km (recovery) |
Phase 4: Taper (Weeks 13–16)
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Total |
|---|---|---|---|---|---|---|---|---|
| 13 | Rest | Easy 8km | Tempo 11km | Rest | Easy 8km | Rest | Long 26km | 53km |
| 14 | Rest | Easy 8km | Easy 8km | Rest | Easy 6km | Rest | Long 19km | 41km |
| 15 | Rest | Easy 6km | Easy 6km | Rest | Easy 5km | Rest | Long 13km | 30km |
| 16 | Rest | Easy 5km | Easy 5km | Rest | Easy 4km | Rest | RACE DAY | — |
*Tempo runs: 5-minute easy warm-up, middle portion at Marathon Goal Pace (MGP) or 10–15 sec/km faster, 5-minute easy cooldown. Remaining kilometers run easy.*
Pacing Guide
What Pace to Run the Long Run
Easy pace = 60–90 seconds per km SLOWER than your marathon goal pace. For a runner targeting 5:00/km marathon pace, easy runs should be 6:00–6:30/km. Never run the long run at marathon pace.
Calculating Your Marathon Goal Pace
Use our Marathon Pace Calculator to determine per-kilometer splits. A conservative starting target for first-time marathoners: - Finish time = (current 10km time) × 4.65 using the Riegel formula - Example: 55-minute 10K → 4:15:30 marathon → 6:03/km goal pace
Plan to negative split (run the second half slightly faster): start the first 10km at MGP + 15–20 sec/km, then settle into goal pace from km 10–35.
Nutrition for Marathon Training
Daily Caloric Needs Increase Significantly
Training 50–65km per week adds approximately 1,500–2,500 calories per week to your baseline needs. Under-fueling in marathon training is the most common reason runners fail to finish long runs or recover poorly between sessions.
Carbohydrate target: 5–7g per kg body weight on training days; 8–10g/kg on long run days (30km+).
Fueling the Long Run
For runs over 90 minutes, carbohydrate supplementation is required to prevent glycogen depletion ("hitting the wall"):
| Long Run Duration | Fuel Strategy |
|---|---|
| Under 90 minutes | Water only |
| 90–120 minutes | 30–45g carbs/hour (1 gel) |
| 2–3 hours | 45–60g carbs/hour (1–2 gels) |
| 3+ hours | 60–90g carbs/hour (mixed sources) |
Practice your race-day fuel in training: Never try a new gel, drink, or food on race day. Your GI tract needs to adapt to absorbing carbohydrates while running. Practice fueling at race pace in Weeks 5–12.
Injury Prevention: The Non-Negotiables
1. Never skip the recovery weeks. Weeks 4, 8, and 12 exist for connective tissue repair. Tendons adapt slower than muscles. Removing recovery weeks is the leading cause of stress fractures in marathon runners.
2. Strengthen your hips. Weak hip abductors (glute med) are the underlying cause of IT band syndrome, runner's knee, and hip flexor injuries — the three most common marathon training injuries. Add 2 × 15 minutes of glute strengthening (clamshells, lateral band walks, single-leg squats) per week.
3. Replace shoes at 700–800km. Running shoe midsoles lose shock absorption before the upper wears out. Marathon training will use 2–3 pairs of shoes.
Frequently Asked Questions
How long before a marathon should I start training? This 16-week plan assumes a pre-existing running base. Most beginners need 24–32 weeks total — 8–12 weeks building to 5–6km continuous running, then 16 weeks of this plan.
Should I walk during the marathon? Walking is a legitimate race strategy, not a failure. Many runners use a run-walk strategy (9 minutes running, 1 minute walking) and finish faster than those who run continuously and blow up after km 30. Jeff Galloway's run-walk-run method has helped hundreds of thousands of beginners complete their first marathon.
What is the wall in a marathon? "Hitting the wall" describes the severe fatigue and performance collapse that occurs when glycogen stores are fully depleted — typically around km 32–35. The wall is preventable through: (a) adequate carbohydrate fueling during the race, (b) not starting too fast, and (c) sufficient long run training to adapt fat oxidation systems.
Can I do strength training during marathon training? Yes, and you should — but with modifications. Priority shifts to injury-prevention strength (hip, glute, core) rather than hypertrophy. Reduce heavy compound lifts during peak weeks (10–12) to avoid interference with running recovery. 2 × 45 min per week of functional strength is the optimal balance.
