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Trail Ultra Marathon - 50 mile to 100km 12 Week Training Plan, With Strength and Conditioning

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Trail Ultra Marathon - 50 mile to 100km 12 Week Training Plan, With Strength and Conditioning


Doug Stewart

All plans by this Coach


12 Weeks

Plan Description

A dedicated 12 week plan tailored for the unique demands of trail ultra marathons - up to 100km distance, written by an experienced trail running Coach and Mountain Runner, and ultra runner who has completed many of the hardest mountain races including Trofeo Kima, Tromso Skyrace, Glen Coe Skyline and UTMB.

Excellent for experienced road runners transitioning to trail.

It is 12 weeks long and features 2 or 3 build weeks followed by a recovery week and a two week taper.
Designed for trail races for events from 50 miles up to c.100km distance on trails and for athletes that are comfortable running for c. 3 hours.

Requires access to hills or a treadmill for certain workouts and a HR monitor.
It features a progressive strength and conditioning plan, that compliments the stage of run training. With 2 sessions per Build Week and 1 on Recovery Weeks.

Time based rather than distance.

Suitable for those looking to finish or those looking for a fast time as optional for harder or easier workouts.
Race day advice provided throughout the plan with downloadable guides.

How it Works

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Training Plan Sample Week


Average Weekly Breakdown

Workouts Weekly Average Longest Workout
Run x5
09:08:00 05:30:00
Strength x1
01:25:00 01:00:00
Workouts Per Week Weekly Average Longest Workout
09:08:00 05:30:00
01:25:00 01:00:00

Training Load By Week

This plan works best with the following fitness devices:

  • Heart Rate Monitor

All supported devices

Doug Stewart

TMR Coaching

TMR Coaching are here to help you reach your goals in endurance events. We offer bespoke coaching packages and training plans for some of the toughest events on the planet.

Coaching for:

  • Ultra running
  • Mountain & sky running
  • Endurance and extreme triathlon


  • Specialised running and triathlon training plans
  • Performance analysis making use of latest technologies (WKO5, Best Bike Split, Running Power Meters)
  • Strength & conditioning
  • Mental training and race planning

  • 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.

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