periodization

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Training phase design, progressive overload, mesocycle planning, tapering, and post-race recovery

severi By severi schedule Updated 2/10/2026

name: periodization description: Training phase design, progressive overload, mesocycle planning, tapering, and post-race recovery

Periodization & Training Plan Design

Training Phases

Base Phase (4-8 weeks)

  • Focus: Aerobic development, injury prevention
  • Volume: Build gradually to target weekly mileage
  • Intensity: 80-90% easy, 10-20% moderate (strides, tempo introductions)
  • Progression: Increase weekly volume by 10% per week, with recovery week every 3-4 weeks
  • Key workouts: Easy runs, long runs (building distance), strides 2x/week

Build Phase (4-8 weeks)

  • Focus: Lactate threshold, running economy
  • Volume: Maintain or slightly increase base mileage
  • Intensity: 75-80% easy, 20-25% quality (tempo, intervals, hills)
  • Key workouts: Tempo runs (20-40 min at threshold), cruise intervals, progression runs
  • Quality sessions: 2 per week maximum, never back-to-back

Peak/Specific Phase (3-6 weeks)

  • Focus: Race-specific fitness, pace familiarity
  • Volume: Maintain or slight decrease (90-95% of peak)
  • Intensity: Race-pace work becomes primary quality session
  • Marathon-specific: Goal pace runs (8-16km at marathon pace within long run)
  • 5K/10K-specific: VO2max intervals, race-pace repetitions

Taper Phase

  • 5K/10K: 7-10 days, reduce volume 30-40%, maintain some intensity
  • Half Marathon: 10-14 days, reduce volume 40-50%
  • Marathon: 2-3 weeks, reduce volume 50-60% final week
  • Ultra: 2-3 weeks, similar to marathon
  • Rule: Reduce volume NOT intensity. Keep short sharp sessions.

Recovery Phase (post-race)

  • 5K/10K: 3-5 days easy, back to normal in 1-2 weeks
  • Half Marathon: 5-7 days easy, 2-3 weeks to resume quality
  • Marathon: 2-4 weeks easy running only, no quality for 3-4 weeks
  • Ultra: 3-6 weeks progressive return, listen to body

Mesocycle Design

Standard Pattern: 3+1 or 2+1

  • 3+1: 3 weeks progressive build + 1 recovery week
  • 2+1: 2 weeks build + 1 recovery week (better for injury-prone or older athletes)
  • Recovery week: reduce volume 20-30%, maintain 1 quality session at lower volume

Weekly Structure Templates

3-4 runs/week (beginner/time-limited)

  • Mon: Rest
  • Tue: Easy run
  • Wed: Rest or cross-train
  • Thu: Quality session (tempo/intervals)
  • Fri: Rest
  • Sat: Easy run
  • Sun: Long run

5-6 runs/week (intermediate)

  • Mon: Rest or easy recovery
  • Tue: Quality #1 (tempo/threshold)
  • Wed: Easy run
  • Thu: Easy run with strides
  • Fri: Quality #2 (intervals/hills)
  • Sat: Easy run
  • Sun: Long run

6-7 runs/week (advanced)

  • Mon: Recovery run
  • Tue: Quality #1 (AM: intervals, PM: easy)
  • Wed: Easy run
  • Thu: Medium-long run or progression
  • Fri: Quality #2 (tempo)
  • Sat: Easy run with strides
  • Sun: Long run

Progressive Overload Principles

  • 10% rule: Increase weekly mileage by max 10% per week
  • Staircase progression: 3 weeks up, 1 week down (repeat)
  • Long run cap: No more than 30-35% of weekly mileage in one run
  • Quality cap: No more than 20% of weekly volume at threshold or faster
  • New runner: Start with 3 runs/week, add frequency before volume

Workout Types by Phase

Phase Primary Workouts Purpose
Base Easy runs, long runs, strides Aerobic base
Build Tempo, cruise intervals, hills Lactate threshold
Peak Race-pace work, VO2max intervals Race specificity
Taper Short tempo, strides, easy volume Maintain sharpness

Common Mistakes to Watch For

  • Too much intensity too soon (should be <20% of volume)
  • No recovery weeks (leads to staleness/injury)
  • Long run too fast (should be conversational)
  • Skipping base phase to jump to intensity
  • Not respecting the taper (adding "just one more" hard session)
Install via CLI
npx skills add https://github.com/severi/runnai --skill periodization
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