The fastest-selling 50K on the East Coast — punishing Loyalsock singletrack through the Endless Mountains
Other trail races within 189 miles
The Worlds End 50K is a demanding, highly sought-after trail race through Pennsylvania's Endless Mountains, following the Loyalsock Trail and connecting side trails through Loyalsock State Forest and Worlds End State Park. The course packs roughly 5,900 feet of cumulative gain onto predominantly technical singletrack, threading past scenic overlooks like Butternut View, High Rock Vista, and Canyon Vista, plus waterfall features including Alpine Falls and Double Run. Despite its shorter distance compared to the 100K, the race is explicitly not for beginners — rocky terrain, narrow cliff-side ledges, swampy sections, and precipitous descents demand trail experience and focused footwork throughout.
Some ultra experience recommended
Forksville, PA, United StatesJune 05, 2027
Worlds End Ultramarathon 50K is a loop trail race in Forksville, PA, United States, held on June 05, 2027. The course covers 30.1 miles, climbs 5,580 ft, and has a 12h cutoff.
| Location | Mile | Elevation | Cutoff | Drop bags |
|---|---|---|---|---|
Start Start | 0.0 | 1,115 ft | — | |
High Rock Aid Station | 3.8 | 1,860 ft | — | |
Iron Bridge Aid Station | 11.1 | 1,342 ft | 4h11:00 AM | |
Devil's Garden Aid Station | 14.5 | 1,785 ft | — | |
Worlds End Aid Station | 18.4 | 0 ft | 6h30m1:30 PM | Drop Bags |
Canyon Vista Aid Station | 21.1 | 1,745 ft | — | |
Coal Mine Aid Station | 24.6 | 1,762 ft | 9h15m4:15 PM | |
Worlds End Finish | 30.1 | 1,115 ft | 12h7:00 PM |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
No pets allowed on the course. Pets are welcome at the start/finish area and with crews at aid stations but must be leashed within the state park.
Camping available at Worlds End State Park (same park as start/finish line) — cabins and campsites bookable via ReserveAmerica. Loyalsock State Forest also offers roadside, rustic, and primitive backpacking campsites (permit required via DCNR). Pioneer Campground and several B&Bs and motels available within a few miles in Forksville/Dushore.
Race day falls on Memorial Day weekend in late May when Pennsylvania's Endless Mountains transition from spring to summer. Daytime highs typically range from 65–85°F (18–29°C) with overnight lows of 47–60°F (8–16°C). The 7AM start means cooler morning conditions that warm through mid-race. Historical data shows mostly dry conditions, but afternoon thunderstorms are possible and spring weather in this region can shift rapidly. Wet rocks on the technical singletrack significantly increase difficulty.
Daytime highs can reach 85–90°F in late May; exposed ridge sections and midday running amplify heat stress
Spring thunderstorms possible; wet rocks on the technical trail dramatically increase difficulty on descents
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