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Worlds End Ultramarathon

May 30, 2026
Forksville, PA 18616 US

Race Registration in


100k

Price: $195
Time: 5:00AM EDT 11:59PM EDT

Sorry! This event is full.
Join the Waiting List Registration ends May 22, 2026 at 12:00pm EDT

50k

Price: $105
Time: 7:00AM EDT 7:00PM EDT

Sorry! This event is full.
Join the Waiting List Registration ends May 22, 2026 at 12:00pm EDT

Registration Deatils:

 
Registration for the 2026 Worlds End Ultramarathon opens December 6, 2025 at 6:00PM using RUNSIGNUP as our preferred registration platform. The price continues to be $105 for the 50k and $195 for the 100k (+ registration fees.) We have a 200 person capacity limit and the race registration is first come, first served. There is a qualifying standard for the 100k race that must be met prior to signing up.
 
Historically, the demand for this race has been extremely high for over 10 years – which means we sell out between 3 and 6 minutes every year. If you do not have a Runsignup account, take a moment prior to registration opening and set up an account. This will ensure you have the best chance of getting into the event. During registration, you will need to provide the name of your qualifying race and a link to the results where we can verify your name and time. Do not put in a general website link but the specific link to the results where we can search for your name.
 
The wait list opens immediately after the race fills to capacity. While the wait list can be as long as the number of participants in the event, we tend to work our way through a large majority of the names on the list as we draw closer to the event. Don’t be afraid to put your name on the wait list and train like you’re going to race on race day.
 
Note: Qualifying criteria are in place for event safety, manageability, and so that all participants are set up to have a positive race experience. Those not meeting the requirements will not be allowed entry to the race.
 
100k Quailfication:
The difficulty of the terrain means this is NOT an entry-level race. Each potential participant will be reviewed by the race directors after we receive the completed registration. At a minimum, all participants must have completed at least one 50k trail race within the advertised cut-off time before signing up. This must be within 3 years of the registration date.
 
If you have a race that is not a 50k but has a high degree of difficulty, it may be an exception to the above standard – just email us to find out if the race may qualify you. Be sure that your race is an official race with results published on a publicly available website. Timed races can not be used as a qualifying race. You must have completed a qualifying race before registering.
 

Information

One of the toughest and most beautiful courses you’ll find anywhere!
The Worlds End Ultramarathon is a challenging foot race that explores the Loyalsock Trail, Loyalsock State Forest and Worlds End State Park in the Endless Mountains of Pennsylvania. The routes are largely rugged, scenic-dense single-track trails with some fairly remote sections, several waterfalls and multiple vistas of the beautiful Endless Mountains. The PA Department of Conservation and Natural Resources describes Worlds End State Park as "virtually in a class by itself, this wild, rugged and rustic area seems almost untamed." This is NOT a beginner-level ultra and participation in the race should not be taken lightly.

100k Course Description
The course is predominantly rugged single-track that winds it's way through the the Endless Mountains in the Loyalsock State Forest and Worlds End State Park. Your effort will reward you with beautiful overlooks such as High Rock Vista, Canyon Vista, Upper and Lower Alpine View, Kettle Creek Vista, and High Knob Overlook along with spectacular cascades and falls like Double Run, Dry Run, Rode Falls and Lee's Falls in the Ketchum Run Gorge, just to name a few. You'll pass many interesting rock formations like Split Rock, take in the tranquility of Sones Pond and climb a wooden ladder along side Rode Falls. 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 12,000 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 19 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 13 aid stations along the way. Not only will you see the usual ultra spread, expect to see delicious fresh fruit, bacon, and a plethora of other delicious treats to keep you moving to the finish line. You'll also have 4 aid stations that will be crew accessible and 3 locations to pick up and swap pacers from.

**The Worlds End 100k is also part of the Pennsylvania Triple Crown of Mountain Running series. These races showcase the best of Pennsylvania’s ultra mountain-running scene and celebrates the wild beauty of these rugged old mountains, and the vibrant trail-running culture that thrives in them. Do you have what it takes to tame the wilderness races of PA?**

50k Course Description
If you are not ready to tackle the full 100k but still want to take in the beauty of Worlds End, you can still challenge yourself with the 50k course. The race follows the same route as the 100k but veers off to bring you home before the start of the lower loop. While only half the distance and half the elevation (5,800 feet), it's still chock full of fabulous scenery and awesome trails. We also give you a more generous time limit of 12 hours to complete the course.

Now don't let the distance fool you, the 50k will grind you down over the long haul too. Luckily, we'll take care of you with 6 aid stations along the way. You will you see the usual ultra spread, but also delicious fresh fruit, bacon, and a plethora of other delicious treats to keep you moving to the finish line. No aid station is crew accessible and no pacers are permitted in the 50k race.

Post Race
After you survive Worlds End, hang around to enjoy the post race food and explore the state park. We will have a smorgasbord of homemade soups, chili, pulled pork and burgers - whether a meat lover, vegetarian, or vegan, our spread will have an option for you. And while it may not look like the fanciest of feasts, we're sure you'll vote it top of the list for best post race food around. We will also have a relaxing atmosphere to help you unwind after your hard effort on the trails.

Contact Us

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Location

82 Cabin Bridge Rd
Forksville, PA 18616 US View Location on Map

Map Location

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