Bakken Performance
Training systems for endurance athletes.
Bakken Performance AS publishes books, training programs, and digital resources for structured endurance training, built on threshold-based methods developed and tested over 25 years, from elite 5000m racing to everyday marathon preparation.
Marius Bakken
Bakken Performance is operated by Marius Bakken, MD, a Norwegian physician and two-time Olympic 5000m runner with a personal best of 13:06. From the late 1990s he developed lactate-guided threshold training methods that later became part of what is widely known as the Norwegian Method.
He practices as a physician in Kristiansand and writes and publishes through Bakken Performance. More at mariusbakken.com.
Books
Løping! (Running!) reached #1 on the Norwegian nonfiction bestseller list. The Norwegian Method Applied, with a foreword by Steve Magness, is the technical guide to the training system. Published in English in 2026, it reached #1 among top-selling running books on Amazon over an 8-week period.
100 Day Marathon Plan and App Development
An online marathon training program in continuous operation since 2009, with more than 4,000 paying members. 100daymarathon.com
The bakken.run training app is currently in development, with planned support for structured training, completed-activity syncing, and recovery-aware training feedback.