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Jeff Browning's 20-week 50K Ultra Marathon Training Plan


Jeff Browning

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20 Weeks

Plan Description

This 20-week ultra running training plan is designed for runners who want to improve their ultra trail running performance and prepare for an upcoming 50K mountain running event.

The plan includes an initial base building phase using MAF HR (Maximum Aerobic Function Heart Rate) principles in the first 4 weeks and systematically adds hills to build strength before using a 2 week build, 1 week recovery strategy as you slowly build your weekly long run. It also includes 2 days per week of strength training — quick workouts you can do at home with lightweight dumbbells and the other day a bodyweight routine.

The plan systematically builds with biggest volume blocks including back to back long runs 8, 5, and 3 weeks out from your target 50K event. The largest week peaks at 10 hours of running in week 17 (3 weeks from race day). The last long run is 2 weeks out, followed by a 2 week taper to race day.

BASE FITNESS NOTE: Individuals should have some running background and are capable of handling back to back weeks of around 3-4 hours of running to start the plan. If you're a beginner or it's your first ultra, it is recommended you have at least 4 weeks of 3-4 days per week of easy running before starting this plan.

Like any healthy, intelligent training plan, this plan mixes hills, quality, strength, mobility, easy runs, and the staple long runs — all at varying intensities. It is important to listen to your body and take into account lifestyle stress (work, family, commitments, etc.) so you are able to absorb the training and adapt to the more demanding weeks. That means taking an extra, unplanned day off sometimes if need be, even if the plan calls for a workout. Be smart and good luck in your goal event.

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How it Works

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Training Plan Sample Week


Average Weekly Breakdown

Workouts Weekly Average Longest Workout
Run x5
06:35:00 04:30:00
X-Train x4
00:60:00 00:45:00
Strength x2
00:12:00 00:12:00
Day Off x1
—— ——
Workouts Per Week Weekly Average Longest Workout
06:35:00 04:30:00
00:60:00 00:45:00
00:12:00 00:12:00
Day Off
—— ——

Training Load By Week

This plan works best with the following fitness devices:

  • Heart Rate Monitor

All supported devices

Jeff Browning

GoBroncoBilly Ultra Endurance Coaching

Looking to put a little giddyup in your trail running step? I offer personalized online endurance coaching to help you achieve your specific trail and ultra running goals — built uniquely for you. I provide consultation, feedback, evaluations, training plans, tips and race strategies to help prepare you for your upcoming trail or ultra marathon race. Visit for customized coaching services or choose a Training Peaks Training Plan and get started today. Giddyup!

  • 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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