Build Block: Classic Tempo
Workout - Build Block: Classic Tempo
- 15min @ 6'00''/km
- 22min @ 5'00''/km
- 12min 30s @ 6'15''/km
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Quick Summary
Here’s a breakdown of How Long it REALLY Takes to Train for a Marathon (And How) from This Messy Happy. The video offers valuable insights—we’ve distilled the main takeaways so you can put this training approach into action right away. Watch the full video for additional context and examples.
Key Points
- Your purpose shapes the plan – approach the marathon as a process goal (building a sustainable running lifestyle) instead of treating it as a single, disconnected achievement.
- Structured training blocks – organize training into 4-week phases: three weeks of building stimulus, then one week focused on recovery. The final phase consists of three weeks to build fitness, followed by a three-week wind-down before race day.
- Alternating daily rhythm – follow an every-other-day running schedule with an easy, unhurried long run on the weekend, mid-week aerobic work, and one weekly session at tempo or threshold intensity. Fill non-running days with strength and mobility.
- Respect prescribed mileage – follow the workout distances closely rather than consistently exceeding them (for example, keep a 23 km long run at roughly that distance). This measured progression lowers injury risk.
- Recommended duration – runners whose longest run ranges from 10–12 km and whose mid-week efforts sit at 5–10 km benefit most from an 18-week training window.
Sample 18‑Week Structure (weeks 1‑18)
| Phase | Weeks | Focus |
|---|---|---|
| Base Block 1 | 4 | Easy aerobic runs, 1‑2 short strides, strength work |
| Base Block 2 | 4 | Add occasional lactate‑threshold runs (7‑8/10 effort) |
| Build Block 1 | 4 | Increase long‑run distance (up to 20‑23 km), keep tempo run at marathon/half‑marathon pace |
| Build Block 2 | 3 | Peak volume, longest long run (≈25 km), sharpen tempo |
| Taper | 3 | Reduce mileage by ~30‑40 %, keep a short tempo to stay sharp |
Typical Week (during a Build Block)
- Mon – Rest or light strength/conditioning
- Tue – Easy run 6‑8 km (zone 2, conversational pace)
- Wed – Rest or cross‑training
- Thu – Tempo run 8‑10 km at 7‑8/10 effort (marathon pace if racing, otherwise comfortably hard)
- Fri – Rest or easy 5 km + strides
- Sat – Easy run 6‑8 km
- Sun – Long run 20‑23 km easy (zone 2, focus on time on feet)
Adjust distances to match your current mileage and the paces you can sustain.
Practical Tips
- Maintain a training log and check how your actual runs compare to what’s prescribed.
- When a workout gets missed, move forward with the following session rather than trying to squeeze in the missed run later.
- Don’t skip recovery weeks – they’re when your body adapts and gets stronger.
- For tempo or threshold work without a target race pace, use the 7‑8/10 effort scale.
- Weave strength and mobility work into non-running days to prevent injury.
Closing Note
Follow this 18-week plan, adapt the paces using the Pacing app to match your abilities, and embrace the whole experience as you work toward your marathon goal. Remember, one marathon doesn’t define your running journey—keep building on what comes next! 🚀