• Ultramarathon - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Ultramarathon An ultramarathon, also called ultra distance, is any footrace longer than the traditional marathon length of 42.195 kilometres (26.219 mi). There are two types of ...
  • ULTRAmarathonRunning.com | The ULTRA Running Race ...

    www.ultramarathonrunning.com Ultramarathon running races, training and information for ultra running enthusiasts. Trail, mountain, desert, 24 hour and other long distance endurance events.
  • Ultrarunning Magazine | ultraRUNNING Online

    www.ultrarunning.com The Science of Ultrarunning by Matt Laye; ... And so the idea for the GUR was born: a comprehensive ranking of every finisher of every ultramarathon in the country.
    • Dean Karnazes | Ultramarathonman

      www.ultramarathonman.com/web © 2015 Ultramarathonman.com All rights reserved. | ABOUT; DK-GPS; BOOKS & SPEAKING; INNER ACTION; MEDIA GALLERY; SCHEDULE © 2015 Ultramarathonman.com All rights ...
    • Ultramarathons | Runner's World

      www.runnersworld.com/tag/ultramarathons The author takes part in the 140-mile ultramarathon across the Sahara.
    • The 9 Toughest Ultramarathons | Outside Online

      www.outsideonline.com/1856916/9-toughest-ultramarathons With roots in the mid-1970s, Badwater is one of the grandpappies of the modern ultra craze. But age has not dulled what is billed as the world’s toughest footrace.