Distance: 20 km
Skill / Level: Intermediate (Trail focus)
Duration: 24 weeks
Workouts per week: 5–7
Weekly hours: 5–8
Includes: Running, Strength, Mobility, Stretch
Who is this plan for?
This plan is designed for intermediate trail runners with 1–3 years of consistent training who want a longer, structured 24-week build toward a 20K trail race. It’s ideal if you already have a solid base and prefer extra time to improve speed, endurance, and technical efficiency—so you can race stronger than “just finishing.”
What you’ll get
A 24-week progressive plan written in English by experienced trail running coaches at Arduua.
Running sessions prescribed by time and heart rate zones (not distance), so training adapts to your fitness.
Strength, mobility, and stretch workouts with detailed instructions and video links.
A smart, long-term progression that balances volume, intensity, and recovery—boosting performance while reducing injury risk.
Plan Structure
This plan follows the Arduua Training Methodology, expanded across 24 weeks of progressive phases:
Base Phase
Build aerobic endurance and overall conditioning
Improve mobility, stability, and core strength
Reinforce feet, ankles, and supporting structures for trail running
Specific Phase
Train aerobic and anaerobic thresholds
Develop VO₂ max and trail running efficiency
Build maximum strength, hill power, and trail-specific conditioning
Pre-Competitive Phase
Practice race-specific pacing, terrain skills, and sustained efforts
Refine nutrition, hydration, fueling, and gear strategies
Maintain strength with functional and plyometric work
Taper + Competition
Reduce training load to arrive fresh and sharp
Include short, quality sessions to keep legs primed
Guidance for taper nutrition and race-day fueling
Requirements
A TrainingPeaks-compatible training watch
An external chest strap heart rate monitor (wrist-based HR is not accurate enough for this plan)
👉 With this 24-week intermediate trail plan, you’ll gain the structure, progression, and trail-specific preparation to perform at your best in a 20K trail race—finishing stronger, faster, and more confident.
🌍 Global training platform for trail, mountain, ultra & road runners
🏃♂️ Structured training 👨🏫 Expert coaching 📊 Proven system
⛰️ From 5K to 100 miles 🌐 Athletes in 30+ countries
Train with confidence. Progress consistently. Perform at your best. Coaching in English & Spanish