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100 Mile MTB Race 12 Week Build Plan



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12 Weeks

Plan Description

This plan is designed for people who want to compete in an 80-100 mile MTB race. The build plan will prepare you for the demands of racing your mountain bike for 80-100. The plan assumes you have a strong aerobic fitness that is ready for high intensity workouts. Before starting this plan we recommend completing the 12 week 100 Mile MTB Race Base Plan. Visit our site to learn more about choosing our training plans to meet your needs.s

Start this plan 12 weeks before the start of your target race. Rest days are on Monday and Friday and rest weeks every three weeks. Designed to start on a Monday with shorter workouts on weekdays and longer workouts on weekends.

Workouts are written to use a power meter, a HR monitor or rate of perceived exertion, but using a power meter AND a HR monitor is best for accurate monitoring of progress. The plan includes structured workouts compatible with your smart trainer and device to guide you through workouts in real time.

Visit the MTBCoach 100 Mile MTB Race Training Plans page for more details

How it Works

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Workout and Analyze

Upload completed workouts from your favorite tracking app or device.

Track Your Progress

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Training Plan Sample Week


Average Weekly Breakdown

Workouts Weekly Average Longest Workout
Bike x4
06:43:00 04:30:00
Strength x2
00:43:00 00:20:00
MTB x1
01:24:00 02:00:00
Workouts Per Week Weekly Average Longest Workout
06:43:00 04:30:00
00:43:00 00:20:00
01:24:00 02:00:00

Training Load By Week

This plan works best with the following fitness devices:

  • Power Meter
  • Heart Rate Monitor

All supported devices



MTBCoach is a global endurance coaching company offering over 30 years of endurance racing experience and endurance coaching since 2008. We specialize in helping the Average Joe and Jane compete in endurance cycling and triathlon events. Our remote 1-on-1 coaching and training plans take into account your life and training needs and give balance to meet or exceed your goals.
Check out our services and training plans at

  • 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.
  • Syncs daily with other popular apps like Garmin and MyFitnessPal.

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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