Marathon Threshold Builder

Workout - Marathon Threshold Builder

• 15min @ 6'00''/km
• 4 lots of:
  • 1.0km @ 5'00''/km
  • 2min rest
• 15min @ 6'00''/km

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Intro: Here’s what you need to know from This Messy Happy’s video on How Long Should Normal Runners Train for Marathons? It’s worth watching in full, but we’ve pulled the core takeaways so you can start implementing today.

Key Points:

• An undulating schedule (alternating run days) prevents consecutive runs and fits better into busy schedules.
• Start with four runs weekly: Tuesday (intervals), Thursday (easy run), Saturday (easy run), and Sunday long run. The weekend pair form your non-negotiable cornerstones.
• Build your long run to a peak of roughly 20 miles (35 km), or around 3 hours; then reduce by ~10% each week after that peak. These sessions double as testing grounds for nutrition, gear, shoes, and what you’ll eat before race day.
• Tuesday intervals take many forms—lactate-threshold, marathon-pace, tempo, speed work—but they share one requirement: running faster than your target race pace at least once weekly.
• Easy runs should feel truly easy (you can talk). Don’t confuse this with zone-2 training; it’s low-stress aerobic distance.
• In your build block (weeks 9–15), add a fifth training day (aerobic work or an extra run) and shift Thursday into a marathon-pace session. Your long runs can now include marathon-pace intervals—say, 3 × 3 km or 3 × 4 km stretches—broken up by easy-paced recovery jogs.
• Keep Friday as a complete rest day so you recover before the weekend’s back-to-back efforts.
• On hot days, shift easy runs to a treadmill or find a cooler route. The priority is staying comfortable and recovering well.

Workout Example (Base Block, Weeks 1–8):

• Monday: Mobility and bodyweight drills (pilates ball, mobility work).
• Tuesday: Interval session – for example, 4 × 1 km at lactate-threshold pace with 2-minute easy jogs between (or marathon-pace repeats if you’re already in that phase).
• Wednesday: Strength day – deadlifts, squats, or comparable gym training.
• Thursday: Easy run at conversation pace, 30–45 minutes at comfortable effort.
• Saturday: Easy run – same comfortable pace, 30–60 minutes based on your current fitness level.
• Sunday: Long run – starting at 10 km and building to approximately 20 miles (or 3 hours). Once you hit peak distance, trim around 10% the following week. Use these runs to dial in your race-day nutrition, test your shoes and clothing, and practice pre-race meals.

Build Block (Weeks 9–15) Adjustments:

• Introduce a fifth run day (Wednesday) – either aerobic cross-training like cycling, or another easy run.
• Shift Thursday to a marathon-pace effort – roughly 6–8 km at your target race pace, then an easy jog.
• Your Sunday long run now incorporates marathon-pace intervals – for instance, 3 × 3 km plus 3 × 4 km at goal pace, with easy-paced recovery segments between.
• Friday stays a complete rest day.

Closing Note: Work with this structure and fine-tune your paces based on your fitness level using the Pacing app. You’ve got what you need – now get out there and enjoy the work. 🚀

References

• How Long Should Normal Runners Train for Marathons? - YouTube (YouTube Video)