50k Information

  • WORLDS END 50k

Race Day is May 31, 2025 / Registration opens December 7 (6pm)

Worlds End Ultra 50k

We have a reputation as one of the toughest, most scenic trail 50k’s on the east coast.

The course is predominantly rugged single-track that winds it's way through the Endless Mountains in the Loyalsock State Forest and Worlds End State Park. Your effort will reward you with beautiful overlooks such as Butternut View, High Rock Vista, and Canyon Vista - along with spectacular cascades and falls like Alpine Falls and Double Run. You'll pass many interesting rock formations, take in the tranquility of Sones Pond and you may even see a bald eagle soar beside you as you traverse the rocky ledge of trail that overhangs the Loyalsock Creek.

This course can be described as "hilly" or "rolling" with it's steepest sustained climb only being about 1,000 rocky feet. The deceptive part is that there is a never ending supply of shorter climbs that the trail throws at you to give an unexpected overall elevation gain of about 5,900 feet. Combine this with the often rock strewn, technical trail along with the number of times you'll stop to take in the scenery, and you'll quickly realize this isn't a course you'll try to set any personal records on. The race was designed around the famed Loyalsock Trail but to complete the loop back to Worlds End State Park, you'll spend plenty of time exploring side trails of equal beauty. The course runs deep in the Pennsylvania hills with rocky hollows, diverse forests, narrow gorges, and endless views - enough eye candy to keep you busy for your entire run. But don't linger too long at any one place, you only have 12 hours to complete this race.

Make no mistake, this race is intended to grind you down over the long haul. Luckily, we'll take care of you with 6 aid stations along the way. Not only will you see the usual ultra spread, expect to see a plethora of other delicious treats to keep you moving to the finish line. You'll also have 2 aid stations that will be crew accessible.


Registration Opens: December 7 (6pm)

Course Map

The official course map broken down by the various trails used for the race. You can find additional mapping information using ultraPacer and CalTopo.

CalTopo ultraPacer

Elevation Profile

The official elevation profile which includes aid station information.

Aid Station Planner

This planner includes aid station details, pacing data, and cut-off times for the race.

Participants Guide

You will receive a hard copy of this guide book at bib pick up.

Qualification Standards

We will not be requiring a qualification standard for the 50k race. Be aware though, this race is NOT a beginners-level 50k race since you will need to negotiate rock fields, narrow and uneven terrain, steep climbs, precipitous descents, and even a cliff side trail over flowing water. If you feel up to the task, confident in your ability, and prepare yourself accordingly - please feel free to sign up!

Registration Details

Worlds End 50k Details:
Event date: Saturday May 31, 2025
Start time: 7:00am
Cutoff time: 7:00pm (12 hours)
Start/Finish: Cliff Pavilion at Worlds End State Park
- Bib Pick Up: Friday 5:30pm to 7:45pm (Mandatory for all)
- Pre-Race Meeting: Friday 7:15pm (Highly Recommended)
- Race Check-in: Saturday 5:00am to 7:00am (Mandatory check-in)

Registration is first come, first served and there is a qualifying standard for the 100k race.
2025 Registration Date: December 7, 2024 (6pm).
Capacity: 175 runners
Cost: $105

Registration December 7 at 6pm


We will refund 50% of your entry fee minus any processing fees until April 1. Between April 2 and May 22, we will refund 25% of your entry fee minus any processing fees. No refunds after May 23, 2025. Race registrations are not transferable to other participants or future races, and transferring between distances (up or down) is not allowed. Please consider these factors very carefully before registering.

As a Trail Sisters Approved race, we will continue to offer a pregnancy & postpartum refund as we have in the past. Whether planned or unplanned, expected or unexpected, start or end of a pregnancy, healing and recovery time are required for a women’s overall health. Please contact us for a refund option.

Please use your registration profile to request a refund. Due to maintaining a waiting list, we do not do deferrals, bib transfers, or race distance switches.

Request a Refund

Additional Details for Runners and Crews

Take me deeper into race details!

Go deeper into Worlds End with additional aid station details, race rules, directions to the aid stations, race reports, lodging and food, and much much more!

I want to see all of it!

50k Course Record Holders


Kristina Folcik

Women's 50k Course Record
5:49:20 ('18)


Reagan McCoy

Men's 50k Course Record
4:40:14 ('22)

Snapshots from Worlds End

A catalog of images from past races

People often have trouble describing this race to others due to the combination of how hard the race is coupled with the sheer amount of eye candy the course contains. This collection of images is an attempt to help when words fail us. Click the button below to see the wonderful world of Worlds End!

Snapshots from Worlds End