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Mountain Ultra Marathon - 100 mile 23 Week Training Plan - Advanced


Doug Stewart

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23 Weeks

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Plan Description

A dedicated 23 week plan tailored for the unique demands of mountain ultra marathons of 100 mile distance, written by an experienced Coach and Mountain Runner, Sky Runner who has completed many of the hardest mountain races and ultra marathons including Lavaredo Ultra Trail, Trofeo Kima, Tromso Skyrace and the Glen Coe Skyline.

This is designed for advanced athletes, with many years of training experience.

It is 23 weeks long and features 3 build weeks followed by a recovery week before moving to 2 build weeks and 1 recovery week as training intensifies. It has a three week taper.

Designed for mountainous trail races, such as mountain ultra marathons events up to c.100 mile distance.

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.

Training Plan Sample Week


Average Weekly Breakdown

Workouts Weekly Average Longest Workout
Run x7
11:20 hrs 8:00 hrs
Workouts Per Week Weekly Average Longest Workout
11:20 hrs 8:00 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
$35.00 - Buy Now