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Boulder Field 100

location_on

calendar_today 12 Sep, 2026

directions_run Running

language Official Website

sell $65.00 – $109.00

About the Event

Thank you for the video Pat Durante. Over the last 15 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/18M 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.

Distances

100 km Ultra Run 50K Ultra Run and Mega Hike 18M Run/Hike

Bib Pickup

Fri Sept 11th 4:00PM - 8:00PM & Sat Sept 12th 4:00AM - 7:30AM At the pavillion next to Sand Spring Lake , Hickory Run State Park approx address: Pavillion Rd, Albrightsville, PA 18210

Start - Finish

Hickory Run State Park, Sand Spring Lake approx address: Pavillion Rd, Albrightsville, PA 18210

Fees:

50K: 85$ till 5/15 $89 till 8/15 $95 after 100K $99 till 5/15 $109 till 8/15 and $115 after 18M $59 till 5/15 $65 till 8/15 and $69 after

Refund Policy

Till 8/15: Mail us a stamped self-addressed envelope to receive a refund minus $10 to: UES, c/o Boulderfield, 2137 Old Lancaster Pike, Reinholds, PA 17569 after 8/15: all entries are final unless there is a waiting list. No unauthorized bib transfers, please contact Rd at Stephanweiss@comcast.net to find out if and how you can transfer your bib. No refunds if event gets cancelled or postponed due to weather, acts of god or restrictions put in place by the government. Runners can either run on the new date or get rolled over into the following year.

Awards

All Runners will receive a finisher award (tbd) Top 3 overall , Age groups Top 5 : 18-39, 40-49, 50-59 , 60-69 & 70+

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,

Course

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 boulder field crossing ( less then 1 mile) are very difficult.

Races Offered

100K

Sep 12, 2026

straighten

Distance — 100K

terrain

Type — Running

timer

05:00

sell

$109.00

50K

Sep 12, 2026

straighten

Distance — 50K

terrain

Type — Running

timer

07:00

sell

$89.00

18 Miler

Sep 12, 2026

straighten

Distance — 29K

terrain

Type — Running

timer

07:30

sell

$65.00

About Jim Thorpe

Learn more about the host city, Jim Thorpe.

Scenic view of

Jim Thorpe is a borough in the Coal Region, near Lehighton, Allentown and the Lehigh Valley, in the U.S. state of Pennsylvania.

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Hotels & Places to Stay

Video

Watch highlights and course previews from previous years.

Race Results

All-time top performances and historical records for Boulder Field 100.

Place Name Year Time
🥇 Sarah Colwell '16 11:31:33
🥈 Melinda Coen '21 12:05:50
🥉 Laura Laidacker '20 12:40:43
4 Jessica Snyder '25 12:50:37
5 Kimberly Drozda '21 12:51:54

Runner Reviews

Read what other athletes have to say about their experience at the Boulder Field 100.

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