The long run is the cornerstone of marathon and half marathon training. Proper execution maximizes benefits while minimizing injury risk.

How Long Should Long Runs Be?

Half Marathon Training

Peak long run: 10-13 miles (90-120 minutes)
Weekly long run: 60-90 minutes during base phase

Marathon Training

Peak long run: 18-22 miles (typically 20 miles)
Weekly long run: 90-150 minutes during base phase

Time matters more than distance – 3 hours produces similar adaptations whether it's 18 or 20 miles.

Proper Long Run Pace

Run 60-90 seconds per mile slower than goal marathon pace. Should feel comfortable, conversational. Heart rate in Zone 2 (60-70% max HR).

Progressive Long Runs

Start easy, finish at marathon pace. Example 18-miler:

• Miles 1-8: Easy pace
• Miles 9-14: Marathon pace
• Miles 15-18: Slightly faster than marathon pace

This teaches running fast on tired legs while building confidence.

Fueling Strategy

Before

Light meal 2-3 hours before: Toast with peanut butter, banana, coffee. Avoid high fiber or unfamiliar foods.

During

30-60g carbs per hour for runs over 90 minutes:

• Sports drinks
• Energy gels (every 30-45 minutes)
• Chews or blocks
• Real food (dates, bananas, pretzels)

After

Within 30 minutes: 20-25g protein + 40-60g carbs. Chocolate milk, recovery shake, or meal with protein and carbs.

Hydration Guidelines

Drink 4-8oz every 15-20 minutes. Pre-hydrate with 16-20oz in the 2 hours before. Post-run: 16-24oz per pound of weight lost.

Recovery Essentials

• Rest day or easy cross-training next day
• Extra sleep (7-9 hours minimum)
• Foam rolling and stretching
• Easy runs for next 2-3 days
• Monitor fatigue and soreness

Common Long Run Mistakes

• Running too fast (defeats the purpose)
• Increasing distance too quickly
• Skipping fueling practice
• Running hard the day before
• Neglecting post-run recovery