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Boulder Field 100 - 18mi, 50k, 100k Trail Races

Jim Thorpe, PA, US
Sep 16, 2017

Next entry deadline: Sep 11, 2017

Type: Running - Local

event website

added by: hughmac4

Boulder Field 100

@Hickory Run


Over the last 6 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 challange 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 boulderfield 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 difficuly course. There is a 16 hour timelimit 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.


100 km Ultra Run 50K Ultra Run and Mega Hike

Bib Pickup

Fri Sept 15th 4:00PM - 8:00PM & Sat Sept 16th 4:00AM - 6:30AM
At the pavillion next to Sand Spring Lake , Hickory Run State Park
approx address: Route 534, Jim Thorpe , PA 18229

Start - Finish

Hickory Run State Park, Sand Spring Lake approx address: Route 534, Jim Thorpe , PA 18229


50K: 69$ till 5/31 $75 till 8/20 $99 after
100K $99 till 5/30 $105 till 8/20 and $110 after

Refund Policy

Till 7/31/2016:

Mail us a stamped self-addressed envelope to receive a refund minus $20 to:
UES, c/o Boulderfield, 2137 Old Lancaster Pike, Reinholds, PA 17569

after 7/31/16:

all entries are final unless there is a waiting list. If there is a waiting list, mail us a stamped self-addressed envelope to receive a refund minus $20 to:
UES, c/o Boulderfield, 2137 Old Lancaster Pike, Reinholds, PA 17569

No unauthorized bib transfers, please contact Rd at to find out if and how you can transfer your bib.


All Runners will receive a finisher award (tbd) Top 3 overall and Winner Masters. Age groups Top 5 : 18-29, 30-39, 40-49, 50-59 & Winner 60 plus

Time Limit

All runners have to finish before 9PM, 15.5 min per mile pace for the 100k. This also makes the 50k very hiker friendly. You have 14 hours for 31 Miles.

Aid Stations

Aid Stations (approx): Mile 5, 10, 12,19,25.5 (50K and 100K) 100K: Mile: 31,36,41,43,50,55.5 We highly recommend carrying at least 16oz of fluid to keep hydrated between aidstations. Gatorade and water will be available at all the aidstation. There will be the usual snacks and carbs to keep you fueled at the race (bring your own brand of gels, if you rely on them). All aidstations are staffed by experienced ultra runners,


Entire course is within Hickory Run State Park. Course is a figure 8 shaped 50K loop, 100k runners will run the 50k course twice. 90% of the course is a mix of single track hiking trails and some wider multi-use trails, only about 1 mile of (gravel)road. Most of the trails are not considered super difficult by trail running standards, but especially the Shades of Death Trail section ( about 1 mile)and the boulderfield crossing ( less then 1 mile) are very difficult.


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See also:

Aug 12–13, 2017Eastern States 100
Aug 20, 2017Radnor Red Run 5K Steeplechase
Sep 17, 2017DVOA Hay Creek
Nov 4, 2017ROC - Mendon Trail Run
Nov 11, 2017The Batona 50 - 53 mi Trail Race