Oslo Marathon 2026 · Advanced Plan
Oslo Marathon 2026 Advanced Training Plan — 12 Weeks to Sub-4 Hours
12-week advanced marathon training plan targeting sub-4h at Oslo Marathon 2026. Tempo runs, intervals, long runs with marathon pace. For runners with marathon experience or sub-50min 10K.
Duration
12 weeks
Start
9 June 2026
Goal
Sub-4:00h
Pace
5:41 min/km
Is this plan for you?
✓ Ready if you have:
• Sub-4:30h previous marathon
• Sub-50min 10K
• Sub-1:55h half marathon
• 50+ km/week base
✗ Use beginner plan if:
• First marathon
• Under 40km/week base
• Last marathon over 4:30h
• Running under 1 year
12-Week Training Plan
| Week | Long run (Sun) | Volume |
|---|---|---|
| 1 | 22 km | 65 km |
| 2 | 24 km | 70 km |
| 3 | 26 km (2 km @ MP) | 72 km |
| 4 | 16 km | 50 km |
| 5 | 28 km (4 km @ MP) | 75 km |
| 6 | 30 km (6 km @ MP) | 78 km |
| 7 | 32 km (8 km @ MP) | 80 km |
| 8 | 18 km | 55 km |
| 9 | 34 km (10 km @ MP) | 82 km |
| 10 | 35 km (12 km @ MP) | 85 km |
| 11 | 26 km | 62 km |
| 12 | RACE DAY Sep 20 | 42.2 km |
MP = Marathon pace (5:41 min/km for sub-4h). Weeks 4 and 8 = recovery week (20% volume reduction).
FAQ
What are the prerequisites for the sub-4h plan?
To target sub-4h (5:41 min/km) you should have: Sub-4:30h previous marathon OR sub-50min 10K OR sub-1:55h half marathon. The plan starts at 65km/week in week 1. If you're new to marathons but have a strong base, the plan can work with some adaptation — consider starting 2–3 weeks in at lower volume.
What is marathon pace (MP) for sub-4h?
For sub-4h marathon (42.2km) you need 5:41 min/km or 9:09 min/mile. This is "marathon pace" (MP) in the plan. MP+10s = 5:51 min/km, MP+15s = 5:56 min/km. Tempo sessions in the plan use MP as the reference. Heart rate zone: MP corresponds to approximately 83–88% of max HR (slightly uncomfortable, can say a few words but not full sentences).
What is the single most important workout in marathon training?
The decisive workout type for marathon-specific fitness is the long run with marathon pace segments: e.g. 32km where the final 10–12km are run at actual marathon pace. This simulates late-race fatigue and teaches the body to use fat efficiently at race pace. In this plan, marathon pace segments are introduced gradually from week 3 (2km @ MP) up to 12km @ MP in week 10.
How should I pace the Oslo Marathon for sub-4h?
Sub-4h strategy for Oslo Marathon: Start 5–10 seconds per km slower than target MP for the first 10km (body is cold and adrenaline high). Settle to exact MP km 10–30. Frognerparken hill (km 15–18): don't push, let pace naturally slow, don't compensate with power. From km 30: assess if you can increase. Final 6km: push if you have reserves. Avoid "positive split" (starting too fast) — it's the most common reason for losing sub-4h.
What do advanced runners eat before a marathon?
Carbohydrate loading 2–3 days before the race: 8–10g carbohydrates per kg bodyweight per day. E.g. 70kg runner: 560–700g carbs/day (rice, pasta, bread, sports drink). Reduce fat and fibre in the final 2 days. Race day breakfast (3 hours before start): 200–300g carbohydrates from light food (toast, oatmeal, banana). 45 min before start: gel or fast carbohydrate. During the race: 60–90g carbohydrates per hour from gels, sports drink, dates.
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