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Trail Marathon to 50km Distance - 8 Week Training Plan


Doug Stewart

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8 Weeks

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Plan Description

A dedicated 8 week plan tailored for the unique demands of trail marathons - up to 50km 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 8 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 up to c.50km distance on trails and for athletes that are comfortable running for c. 3 hours. Great for those transitioning from road marathons to trail marathons with specific off road workouts.

Requires access to hills or a treadmill for certain workouts and a HR monitor.
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.

Training Plan Sample Week


Average Weekly Breakdown

Workouts Weekly Average Longest Workout
Run x5
8:00 hrs 3:30 hrs
Workouts Per Week Weekly Average Longest Workout
8:00 hrs 3:30 hrs

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
$15.00 - Buy Now