Go all in for 2026. Purchase a training plan and get 25% off Premium at checkout for a limited time.

Browse More Plans

16 Week Intermediate Marathon Plan with Core and Strength Work - Build From 16 to 40+ Miles

Browse More Plans

16 Week Intermediate Marathon Plan with Core and Strength Work - Build From 16 to 40+ Miles

Includes Structured Workouts

Structured Workouts automatically sync with compatible devices and guide you through workouts in real time.


Learn More about Structured Workouts.

Author

cameron brown

Length

16 Weeks

Includes Structured Workouts

Structured Workouts automatically sync with compatible devices and guide you through workouts in real time.


Learn More about Structured Workouts.

Plan Description

This plan is for someone who has experience running and has already run a marathon but is looking to improve their time and wanting a structured plan that will help them do that.

Additionally, this plan also includes strength work and core work and is structured for someone who is already familiar with doing strength work (not for beginners). You will need access to Barbell, Dumbbells, & Bands.

This plan begins with a functional heart rate threshold test for you to set your HR and Pace zones as HR and Pace are what is used in this plan. The notes on this test are detailed on the workout.

The milage begins at 16 miles and increases steadily by a 2-3 miles each week with 2 de-load weeks (6 & 10). The plan also includes a 2-week taper leading in to race day.

What to expect:

*Scaling milage from 16-45miles in 14 weeks adding 2-3 miles per week with two de-load weeks.
*Running 5 days per week. Typical week will have 2 running workouts, 2 easy runs, & 1 recovery run
* Strength training 2 times per week - 1 heavy lifting day and 1 band work/muscle activation day. (We begin with 1 day for the first few weeks and progress to 2 days per week)
* Core work weekly progressing from 1 day per week to 2 days.

How it Works

Load Your Plan

Quickly view upcoming workouts in the TrainingPeaks app.

Workout and Analyze

Upload completed workouts from your favorite tracking app or device.

Track Your Progress

Get feedback, stay on top of your training and perform at your best.

Learn More

Training Plan Sample Week

Stats

Average Weekly Breakdown

Workouts Weekly Average Longest Workout
Run x5
00:02:00 00:30:00
strength x3
—— ——
Other x1
00:02:00 00:30:00
Workouts Per Week Weekly Average Longest Workout
Run
00:02:00 00:30:00
strength
—— ——
Other
00:02:00 00:30:00

Training Load By Week


This plan works best with the following fitness devices:

  • Heart Rate Monitor
  • GPS

All supported devices


  • This plan includes a Free Basic TrainingPeaks Account.
  • Access your training plan anywhere on the TrainingPeaks mobile and desktop apps.
  • Track your performance with robust data tracking and detailed graphs.
  • Plan for your event in the TrainingPeaks calendar.
  • Track your weight, sleep, hours, fatigue and stress while you train.
  • Completed workouts sync with popular apps like Garmin and Wahoo. Learn More
  • If plan includes Structured Workouts, then planned workouts sync to compatible devices and guide you through workouts in real time. Learn More

Refund Policy

This plan is protected by our Refund Policy and may, with the author's approval, be exchanged for a plan of equal value from the same author.

Bundle Premium—

Save 20%

Premium unlocks smarter training with advanced analytics, TrainingPeaks Virtual, and Structured Strength to give you deeper insights and data-backed results.

$107.99 USD for the first year, billed yearly.

Bundle Premium—

Save 25%

Premium unlocks smarter training with advanced analytics, TrainingPeaks Virtual, and Structured Strength to give you deeper insights and data-backed results.

$101.24 USD for the first year, billed yearly.

Bundle Premium—

Save 20%

Premium unlocks smarter training with advanced analytics, TrainingPeaks Virtual, and Structured Strength to give you deeper insights and data-backed results.

$107.99 USD for the first year, billed yearly.

$49.99 - Buy Now Buy with Premium Bundle