Lee's Sub-3 Marathon Speed Session

Workout - Lee's Sub-3 Marathon Speed Session

• 10min @ 6'00''/km
• 10 lots of:
  • 500m @ 3'50''/km
  • 1min 30s rest
• 10min @ 6'00''/km

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Intro: Here’s a breakdown of Lee Grantham’s video “3 Key Training Sessions to Crush a Sub 3‑Hour Marathon (and How I Ran 2:37!)” covering three essential marathon workouts. The complete video contains valuable additional information—below are the key takeaways so you can get started with one of these sessions in your training this week.

Key Points:

• 500‑meter intervals on flat dog‑leg sections: begin at 10 × 500 m and work up progressively through 12, 15, 18, and finally 20 reps to accumulate volume while increasing speed.
• Hill repeats: mix short uphill sprints (~250 m or ~1 min) to build power with longer hill runs (6‑12 km) that emphasize aggressive uphill movement and smooth downhill technique to strengthen your quads.
• Long undulating runs (2.5‑4 h) on rolling terrain with alternating climbs and descents, finishing faster than you started to develop negative-split pacing while refining your approach to fuel, hydration, and glycogen management.
• Mindset: choose your target pace (≈ 4:15‑4:16 min/km) and assess whether you can sustain it—this mental preparation during training gets you ready for race day.

Workout Example:

1. 500‑m interval session – begin with 10 × 500 m at a challenging yet maintainable pace with 90‑120 s rest periods. Increase by 2‑3 repetitions weekly until reaching 20 total reps.
2. Hill sprint session – perform 8‑10 repetitions of 250‑m uphill sprints (or ~1 min each) at maximum intensity with 2‑3 min full recovery between efforts. Then complete a 6‑12 km hill run at steady tempo, concentrating on powerful uphill climbing and measured downhill descents.
3. Long undulating run – run 2‑4 h on rolling terrain at an even effort level, then accelerate the final 10‑15 % to develop your negative-split execution.

Practical Tips:

• A flat dog‑leg or park loop works as a substitute for a track when performing 500‑m repeats.
• Integrate downhill running into your plan to build quad strength, which becomes especially important in the final stages of the marathon.
• Use your long undulating runs as opportunities to dial in your hydration and fueling strategy so you don’t hit the wall.
• Finish each long run by accelerating over the final portion—this builds your confidence in executing negative-split racing.

Closing Note: Start incorporating these workouts into your training program, adjusting the paces in the Pacing app to align with your current fitness level. You have the structure—focus on consistent execution and you’ll be prepared for sub‑3‑hour performance. 🚀

References

• 3 Key Training Sessions to Crush a Sub 3-Hour Marathon (and How I Ran 2:37!) - YouTube (YouTube Video)