First Double-Run Day

Workout - First Double-Run Day

• 10min @ 6'30''/km
• 20min @ 5'40''/km
• 10min @ 6'30''/km
• 30min @ 6'45''/km
• 5min rest

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Intro

Here’s the breakdown of “How to Double Run Day (and are they worth it?)” from This Messy Happy. The essentials are below so you can test this workout immediately. The full video is worth watching if you want deeper context.

Key points

• What it is: break a single run into two distinct workouts, one in the morning and one at night.
• Why try it: 1) recovery feels smoother than grinding out one long session, 2) it triggers two growth-hormone surges and bumps metabolic rate twice, 3) depleting glycogen twice daily can boost your energy-storage capacity, 4) it lets you rack up mileage when life’s hectic or you’ve hit a training wall.
• When to avoid: if you’re still building a base of continuous 60-90 min runs, or if you have fewer than 3-5 years of solid training under your belt, the added load could do more harm than good.
• How to structure it:
  • First run: more intense, anywhere from 6 mi (about 10 km) to 40-45 min. Match it to your current fitness.
  • Second run: keep it easy, short (30-40 min), and at a pace you can sustain while chatting.
• Frequency: begin with just one double day per week and run both sessions at an easy effort.
• Progression: build up each run gradually as the season moves forward (for example, 45 min + 45 min = 1.5 h total).

Workout example

Morning Run (harder)   : 30-40 min at a comfortably-hard pace (up to 6 mi/10 km)
Evening Run (easy)    : 30-40 min at an easy, conversational pace (<=6 mi/10 km)

New to doubles? Start with 30 min each, then add 5-10 min per run when you’re ready.

Closing note

Try a double-run day. Use the Pacing app to fine-tune durations and paces for your fitness level. Adjust based on what fits your schedule and goals.

References

• How to “Double Run Day” (and are they worth it?) - YouTube (YouTube Video)