Here we list some of the best ultra marathon runners in the world, such as Kilian Jornet, Courtney Dauwalter, Jim Walmsley, and many others.
How to Step Up from Marathon to Your First Ultramarathon - CTS
Inside the Pain Cave With Ultrarunning GOAT Courtney Dauwalter - The Ringer
How To Train For An Ultramarathon
The 8 Best Ultramarathon Runners In The World Today
Harvey Lewis set a backyard ultramarathon record by running 450 miles for four and a half days – while barely sleeping
Kenya's Jepchirchir wins women's marathon with late burst, Olympics News
Extreme Athletes an Human Endurance - The Atlantic
Jovica Spajić, jedan od najboljih ultra trkača na svetu.
Have you tried barefoot shoes?
The Best Ultramarathon Runners In The World
How Aleksandr Sorokin Ran 100 Miles at a 6:31-Mile Pace