Boulder Field 100

Over the last 13 years, Uberendurancesports has built a reputation for putting on well organized running events, many of them trail runs that are also beginner friendly. The Boulderfield 100k/50k was created to offer a new, more challenging race to our runners. We do believe that every properly trained runner can tackle this challenge but it will be more difficult than our other trail races. Elevation is estimated to be about 4000ft per 50k loop. In addition to the rolling character of the course, you will encounter a boulder field crossing and a very rugged 1 mile trail section called the Shades of Death Trail. But it will not be quite as difficult as many of the races in the upstate PA area, so I would think it would be fair to describe this as a mid level difficulty course. There is a 16 hour time limit for the 100k & 14 hour for the 50k, which will make the shorter race hiker friendly. If this sounds like your kind of fun, please join us.

Upcoming Races

Sep 12 2026
50 KM
Course is a figure 8 shaped 50K loop
4,000 4,000 ft.
Single Loop
14:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
Sep 12 2026
100 KM
Course is a figure 8 shaped 50K loop, 100k runners will run the 50k course twice.
8,000 8,000 ft.
Multiple Loop
16:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts

Additional Distances

This event also has the following sub ultra distances

18 Miles

Results

Date Finishers Top Result (F) Top Result (M)
09/13/25 28 12:50:37 10:51:49
09/14/24 25 15:09:45 9:23:26
09/09/23 Results Not Available Submit Results
09/10/22 23 13:27:08 11:17:59
09/11/21 33 12:05:50 10:31:02
09/12/20 16 12:40:43 10:41:24
09/14/19 24 13:19:02 10:32:19
09/15/18 23 13:27:58 10:13:10
09/16/17 31 12:56:32 10:19:21
09/17/16 35 11:31:33 8:57:25
Date Finishers Top Result (F) Top Result (M)
09/13/25 111 6:06:47 4:10:40
09/14/24 144 5:38:01 3:59:56
09/09/23 145 4:49:11 4:31:53
09/10/22 145 4:51:36 4:08:01
09/11/21 169 5:09:20 4:39:56
09/12/20 93 5:53:31 4:15:54
09/14/19 168 5:15:59 4:02:46
09/15/18 150 4:57:27 4:36:41
09/16/17 156 5:09:05 3:52:23
09/17/16 150 4:56:48 3:54:57

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

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