ultramarathoning

English

Etymology

From ultramarathon +‎ -ing.

Noun

ultramarathoning (uncountable)

1. The sport of running ultramarathons.
   • 2007 July 21, Aimee Berg, “Far-From-Basic Training for a 135-Mile Footrace”, in New York Times‎^[1]:

     Both men are pursuing one of the most coveted prizes in ultramarathoning: a nickel-plated belt buckle awarded to athletes who finish one of the world’s most severe and demanding footraces, the Badwater Ultramarathon, in less than 48 hours.