Speed-Based Workouts for Ultramarathon Training – iRunFar

Why and how to use speed-based workouts in your ultramarathon training.

Meghan Hicks and Bryon Powell of iRunFar, the Hub of Ultrarunning

Speed-Based Workouts for Ultramarathon Training – iRunFar

Do You Have These Valuable Traits for Ultramarathon Performance? - CTS

How to Run 50 Miles with Elite Ultra Runner YiOu Wang

2018 CCC 101k Ultramarathon Race Report, by Joshu

Heat Training: 4 Ways to Prep for Running in Hot Weather, by Abigail Lock

Training For Your First Ultra Over 50K - Trail Runner Magazine

Thoughts on training plan for first ultra? Based around 80/20 Running and Training for the Uphill Athlete. : r/Ultramarathon

Powell & Hicks - Mr. & Mrs. Gump - FitWild

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Ultramarathon - Wikipedia

The long-running battle of the sexes: are women really as fast as men in endurance races?

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33 Awesome Running Books on Training, Eating & Motivation, by Brynn Cunningham

I Wish I Knew THIS Before Running My First ULTRA MARATHON

100 miles around Mount Fuji on 'Asia's most important' race - The Japan Times

7 Crucial Tips For Your First Ultramarathon (Multiple Run Coaches)

Kodiak

How To Run Your First Ultra Marathon