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A cross-country footrace longer than a traditional marathon (26 miles, 385 yards).

ul′tra·mar′a·thon′er n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌʌltrəˈmærəˌθɒnə; ˌʌltrəˈmærəθənə)
(Athletics (Track & Field)) a person who takes part in an ultramarathon
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The family of late ultramarathoner Evelyn Ang expressed frustration today after the case of the driver who allegedly hit her last year was again postponed.
Matt Frazier is a vegan ultramarathoner and the founder of the No Meat Athlete Movement.
The South African ultramarathoner, based in Dubai, completed the 10k in just 36.14.
The 42-year-old ultramarathoner spent the last 22 years breaking myriad time, distance and endurance records.
Central to this charity framework is the mobilization of virtue to efface structural inequalities: AOI's 'flexible' employment policies are forgotten amidst the publicity of Solidarite 's local development work, and the selfishness required to become an ultramarathoner is justified by raising money to help those in need.
The male ultramarathoner participants were most motivated by Personal Goal Achievement (4.86), followed by Health Orientation (4.76) and Self-Esteem (4.29).
Walking the walk, Bill Andrews is an ultramarathoner.
When she and Sarsgaard aren't working, they hang out with their daughters and try and go on the occasional run together ("He's an ultramarathoner, so he's been getting me into running lately").
16, 2012): Ultramarathoner Timothy Olson, a top competitor in Saturday's Waldo 100k race, is the Western States 100 champion and Montrail Ultra Cup winner.
At 60 years old, he's an ultramarathoner, adventure runner and mountaineer.
RUNNING ON EMPTY: AN ULTRAMARATHONER'S STORY OF LOVE, LOSS, AND A RECORD-SETTING RUN ACROSS AMERICA blends an autobiography with an account of the author's record-setting run and life: almost thirty years of competing in extreme endurance races including over 100 foot races.
Mary-Beth Lloyd (pictured), a former high school track coach, and ultramarathoner Lisa Smith Batchen are in a hid to raise $1 million for orphans by running and walking 50 miles in each of the 50 states, for a total of 2,500 miles, within two months.