The UMCB has an incredible and storied history, and is recognized as one of the world's most recognized Ultras. Started by Micah True to bring runners from all over the world and introduce them to the Ramamuri (Tarahumara) people and their great culture. The Ultra event brings together endurance athletes from all over the planet to run together with over (what is typically) 600 Raramuri athletes. 

This year will mark the first year that a Marathon distance will be added. While the Marathon will allow more athletes who prefer to run this distance over the 50 Mile, it will still be a very challenging event. The course is being finalized and we are most excited. This will surely prove to be one of the most scenic Marathons on the planet.

Both Ultra and Marathon registrations include the races and attendance to the full weekend of cultural events, activities and gatherings.

Upcoming Races

Mar 6 2022
50 Miles
4 Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
4 Surface Rating
Substantial rocks, roots and/or ruts


50 Miles View course top times

Date Finishers Top Result (M) Top Result (F)
03/07/21 No Results Posted. Submit Results
03/01/20 No Results Posted. Submit Results
03/03/19 160 7:47:32 10:32:03
03/04/18 291 6:18:22 8:40:00
03/05/17 265 6:38:06 8:17:18
03/02/14 337 6:39:16 6:54:56
03/03/13 245 6:33:36 8:38:13
03/06/11 132 7:04:00 8:56:00
03/07/10 165 7:12:32 8:10:47
03/01/09 105 6:38:51 7:40:00
02/02/08 38 6:24:00 7:35:00
03/04/07 19 6:32:00 7:00:00
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information. If you see an error, please let us know

Dahlgren Heritage Rail Trail 50K

  • Aug 6, 2022
  • King George, VA
50 KM