Congratulations to Jess Mullen, age 50, of Washington, who finished her 100th race of at least 100 miles on September 22, 2025, at Ultra Fest in Easton, Washington, with 21:58. She became the 36th person in the world to reach that milestone. https://t.co/8MPWzDMt3h #ultrarunning

Read about the history 100-mile races and how Western States was started. #ws100

Happy 100th Birthday to South Kaibab Trail in the Grand Canyon. On June 25, 1925, the new trail was complete and officially opened. https://t.co/WZyDS4T9It #grandcanyon @GrandCanyonNPS

Years ago while running in a deep remote section of the Grand Canyon, I came across some ruins of buildings. I had no clue about their history. I put together this short video about the history of luxury resort camp built 112 years ago. #grandcanyon https://t.co/Go1qAsh9XR

Congratulations to Meg Eckert of Santa Fe, New Mexico, who smashed the women’s six-day world record at the GOMU Six-Day World Championship in Vallon Pont d'Arc, France, with 603.1 miles (970.6 km), on a 0.7-mile flat loop.

Congratulations to James Bennett, age 34, of England, who finished his 100th race of at least 100 miles on May 3, 2025, at Walton on Thames in England. He became the 32nd person in the world to reach that milestone and the youngest. https://t.co/8MPWzDLVdJ #ultrarunning

Get a free copy of Davy Crockett's best-selling Grand Canyon Rim to Rim History when you become a member of the Grand Canyon Historical Society. Put "Book" in the order comments box. https://t.co/GHGD36710x #grandcanyon #rimtorim

Congratulations to Gary Dudney, age 72, of North Carolina, who finished his 100th race of at least 100 miles on April 27, 2025, at Skunk Ape 100 in Florida, making him the 31st person in the world to reach that milestone. #ultrarunning @UltraRunningMag #100x100

A crazy article about me appeared in Salt Lake City's Deseret News.

Bruce Aiken and his wife Mary raised their three children down in the Grand Canyon near Roaring Springs, now called, Manzanita Rest Area. They greeted many rim-to-rim runners. Here's a short video: https://t.co/11ztp6Aqgh #grandcanyon #ultrarunners

Can't get enough about Barkley? Get the new book about its early history with stories you have never heard about before. https://t.co/61LLdgFJpy #BM100

In 2023, Gary Cantrell (Laz) was inducted into the American Ultrarunning Hall of Fame as its 24th member. So well-deserved. Thanks, Laz, for your impact on the sport. https://t.co/l80L7EPtsW #BM100

Learn about Gary Cantrell's (Laz's) early running career and the experiences he had that shaped him into creating the Barkley. https://t.co/FS64RpQwWs #bm100

Barkley runners run on the Brushy Mountain Prison grounds, home of extreme violence for more than 100 years. It used to be a diseased-filled wooden 4-story structure. https://t.co/61LLdgFJpy #BM100

The 1987 Barkley included 6 marines, with backpacks, canteens, and heavy boots. Their leader told them if they didn’t finish, they would get extra duty. They saw a wolf take down a deer, but didn't finish a loop. https://t.co/mjHMqyPjG4 #BM100

The first Barkley was held in 1986, with three loops, for about 55 miles, 25,000 feet of climbing, with a 24-hour cutoff. Thirteen unlucky runners started. They paid the entry fee of 35 cents. https://t.co/61LLdgFbA0 #BM100

Runners have to find books on the course and tear out the page matching their bib number for the loop. Motivational Barkley book titles from the past. Don't lose those pages! #BM100 #barkleymarathons https://t.co/3g0vcULaH8

Here is a short video about the first year (1986) of the Barkley Marathons. https://t.co/BF4HmCsLLq Subscribe to the Ultrarunning History YouTube Channel. #BM100

Learn about Gary Cantrell (Laz) and the ideas that came into his mind to create The Barkley Marathons. https://t.co/sufMWachgc… #BM100 #BM100

@#BM100 Get my book that includes how the Barkley Marathons started and the history of the first few years: