Relentless Forward Progress: A Guide to Running Ultramarathons

Thanks for your interest in Relentless Forward Progress: A Guide to Running Ultramarathons by’s Bryon Powell. On this page, you can purchase the book, jump to the resources promised in the book, and learn more about the book (here’s the first review), as well as download sample chapters and the table of contents.

Ways to Order Relentless Forward Progress
You can now find Relentless Forward Progress can be found at many book stores, as well as online for about $10 on

If you prefer eBooks, there’s also a Kindle version that is compatible with most eBook readers, including iPads via the Kindle app.

About Relentless Forward Progress: A Guide to Running Ultramarathons
Relentless Forward ProgressMarathons have become too easy for some runners. What was once the pinnacle of achievement in a runner’s life is now a stepping stone for extraordinary adventures in ultramarathoning. The number of ultrarunners—those running distances of 50k (31 miles), 50 miles, 100k (62 miles), or 100 miles—is growing astronomically each year.

Dean Karnazes’ Ultramarathon Man and Chris McDougall’s Born to Run have inspired tens of thousands to try these seemingly superhuman distances. But to date, there has been no practical guide to ultramarathoning. Now, Bryon Powell has written Relentless Forward Progress, the first how-to manual for aspiring ultrarunners. Powell covers every aspect of training for and racing ultra distances. This encyclopedic volume prepares runners for going farther than they have ever gone before and, in the process, shows them that they are capable of the “impossible.”

Here’s the review of Relentless Forward Progress penned by Matt Fitzgerald (author of Racing Weight and many other books) for Competitor. In short, Fitzgerald wrote, “I can think of nothing that would give me more confidence going into my first ultramarathon than having read this book. Nothing is left out.”

Samples of Relentless Forward Progress
Get a sneak peak of Relentless Forward Progress with the following samples:

There are 75 comments

  1. 2014 Marquette Trail 50 | Ray J Runs

    […] and without a clear plan, this time I followed a detailed training plan that I found in the book Relentless Forward Progress by Bryon Powell.  I found the book to be very useful, and I agreed with his overall running […]

  2. The Third Third Need Less, Give More

    […] As darkness approached I was slipping, physically gone, and climbing up an undulating slope that seemed 1000 miles from the finish. I passed a couple who had helped me keep going, I passed some guy who wanted to chat about the wonders of Hoka shoes, and I ignored some self absorbed 20 somethings as I went by. I was just getting one foot in front of another in what ultra expert Bryon Powell calls “Relentless Forward Progress“. […]

  3. 50k training: quick and dirty ‘stuff’ review | Running Ruminations

    […] So. much. information. If you’re interested in stateside or international races, run-of-the-mill 50ks or crazy-ass, days-long races of attrition (hello, multi-stage!), chances are it’s covered here somewhere. Awesome, awesome resource. It’s from this site that I learned about Relentless Forward Progress and from where I’ve based a lot of my training for this forthcoming 50k. For more info about RFP: […]

  4. Essential Books For Your Adventure Library – Joshua Ebert

    […] Relentless Forward Progress: Before I met my friend Ben, who became my ultra running go-to guy for questions, there was this book. Bryon Powell is the founder and editor of the website I Run Far and has made a career out of running ultras and covering ultra races. He is also an excellent example of someone who has made what they love into a career as he went from being an attorney to a running coach and journalist. In this book, he breaks down the science of running and includes essays from elite ultra runners in what works for them. He also outlines great training plans for a multitude of distances. I myself used his training plan when I ran the Leatherwood Ultra 50-miler. […]

  5. training plan for my first 50-mile ultramarathon – lifelong kaizen

    […] plan that would match my needs. After much research, I found Byron Powell’s excellent book “Relentless Forward Progress – A guide to running ultramarathons”, which details options for distances up to 100 […]

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