Level 3: Intermediate Marathon Training Plan [16 Weeks]

The Intermediate Marathon Training Plan is a 16-week plan to chase a marathon PR or Boston qualifier, building 32 to 52 miles (52 to 84 km) a week. Are you ready to take your marathon performance to the next level? The Level 3 16-Week Intermediate Performance Marathon Training Plan by Running Explained is expertly designed for experienced runners who are prepared to elevate their endurance, speed, and overall marathon performance.

Plan at a glance:

• Length: 16 weeks
• Weekly volume: 32 to 52 miles (52 to 84 km)
• Race: marathon (26.2 miles, 42.2 km)
• Best for: experienced runners targeting a PR or BQ
• Key work: marathon pace and threshold work
• Formats: miles, kilometers, or time based

This Plan is for You If:

• You can comfortably run 35 miles (56 km) per week and have completed marathons or half marathons previously.
• You have some experience with structured training and are eager to continue to improve your skills at executing a variety of workouts while also building your fitness.
• You’re committed to improving your marathon performance your marathon training with a balanced mix of endurance-building easy runs and race-specific workouts.

Plan Structure

• Starting Volume: 34 miles/55 km/5hr45min
• Peak Volume: 55 miles/88 km/9hr00min
• Long Run Volume: 11-20 miles/18-32 km
• Runs per Week: 5 runs per week + 1 optional recovery run or aerobic cross-training session
• Types of Runs per Week: 1-2 workouts per week with remainder of runs at easy effort; some weeks contain no workouts.

This plan is intended for experienced intermediate-volume runners who have exposure in previous training cycles to structured workouts and multiple days of running in a row.

What’s Included:

16-Week Training Schedule: Tailored plans provided in miles, kilometers, and time-based formats to suit your training preferences. This schedule is designed to be flexible, allowing you to adjust it according to your life while maintaining a focus on your marathon goals.

Aerobic & Quality Workouts: The plan incorporates a balanced mix of aerobic development, threshold workouts, speedwork, and progressive long runs to build your endurance, speed, and race-day readiness. You'll also engage in specific marathon effort training, including marathon pace workouts and long runs with marathon effort segments, designed to maximize your performance on race day.

Easy Effort Emphasis: Despite the inclusion of challenging workouts, easy effort running remains a cornerstone of this plan. It helps build your aerobic base, reduces the risk of injury, and ensures you're fully primed for peak performance.

Additional Resources:

• Dynamic Warm-Ups & Cool-Downs: Pre-run routines to prep your body and post-run movements to enhance recovery.
• Hydration & Fueling Guidance: Avoid hitting the wall with comprehensive advice on carb-loading, in-run fueling, and electrolyte replacement.
• Strength Training Suggestions: Incorporate core and lower body workouts to improve overall strength, power, and injury prevention.
• Goal-Setting Tools: Set up your workout paces and marathon goal based on current fitness using the provided pace calculators.

Key Features:

Flexibility: Adapt the training schedule to fit your routine while maintaining the integrity of the plan. You have the freedom to swap days if needed and move your long run around to make this plan work for your schedule.

Recovery Focus: Emphasizing rest and recovery days, this plan ensures you're well-rested and ready to peak on race day.

Comprehensive Support: From nutrition and hydration tips to race-day strategies, this plan provides everything you need to prepare for your best marathon yet.

FAQ

Q1. How long does it take to train for a marathon?

16 to 28 weeks depending on your starting point. Plans here run 16 weeks for experienced runners up to 28 weeks from the couch.

Q2. Which marathon plan should I choose?

Finish Your First from the couch (28 weeks), Beginner (20 weeks), Novice (16 weeks), Intermediate (16 weeks, PR or BQ), and Advanced (16 weeks, peak volume), by mileage from about 17 to 66 mi or 27 to 106 km per week.

Q3. How many days a week will I run?

Usually 4 to 6, with easy runs, workouts, and a long run, in miles, kilometers, or time based formats.

Q4. Do these plans include a Boston qualifier build?

Yes. The Intermediate and Advanced marathon plans are designed for a PR or Boston qualifying attempt.

Q5. Can a beginner train for a marathon?

Yes. Finish Your First Marathon starts from the couch and builds over 28 weeks.

Why Choose This Plan?

The Level 3 16-Week Performance Marathon Training Plan is perfect for intermediate-volume experienced runners who are ready to achieve a new personal best!

Take the next step in your marathon journey and crush your goals with the Level 3 Training Plan by Running Explained!

Written by Coach Nick a USATF and RRCA certified Running Coach with 9 years experience and CEO of Running Explained. Every Running Explained plan is built on the same structure, science, and strategy Coach Nick uses with his 1:1 coaching athletes, and is trusted by thousands of runners training for everything from their first 5k to a Boston qualifier. Have a question about this plan? Book a 30-minute call with Coach Nick, or explore 1:1 coaching at runningexplained.com.