Skip to content
kliva
WTF Dark Sky 220 / Cherry Springs 110 / Wooly 50K
UltraUnited StatesPennsylvania

WTF Dark Sky 220 / Cherry Springs 110 / Wooly 50K 2026

25.10 – 30.10.2026Pennsylvania (United States)
Build your race plan →

Pacing, fueling and crew sheet for the course you pick

RegisterOfficial siteWrong info?

12’19240’000 m D+ ft D+

354.1 km220 miDark Sky 220

At a glance

WTF Dark Sky 220 / Cherry Springs 110 / Wooly 50K 2026 took place from Sunday 25 to Friday 30 October 2026 in Pennsylvania (United States). 4 courses from 50 to 354.1 km.

Longest course: Dark Sky 220, 354.1 km with 12’192 m D+ (34 m per km: hilly terrain). Terrain: 68% trail, 7% forest track and 17% road. Terrain data: © OpenStreetMap contributors.

The 2027 edition is expected on Sunday 24 October 2027, date to be confirmed by the organiser. On Kliva, plan your pacing and nutrition for free, then send the plan to your watch.

A series of ultra-trail races in northern Pennsylvania supporting the Warrior Trail Foundation, featuring the Dark Sky 220, Cherry Springs 110, and The Wooly 50K.
From the organiser

4 courses

  1. 50km31.1mi

    2’133 m D+6’998 ft D+

    avg 4%

    Wooly 50K
    No index

  2. 177km110mi

    6’096 m D+20’000 ft D+

    5’687 m D-18’658 ft D-

    avg 3%

    Cherry Springs 110
    No index
    GPX

  3. 354.1km220mi

    12’192 m D+40’000 ft D+

    9’442 m D-30’978 ft D-

    avg 3%

    Dark Sky 220
    No index
    GPX

  4. 354.1km220mi

    9’442 m D-30’978 ft D-

    220M
    No index
    GPX

Course analysis

354.1 km220 mi11’299 m D+37’070 ft D+

467effort kmⓘ354.1 km on the map · feels like 467 km220 mi on the map · feels like 467 km
D+
11’299 m37’070 ft
D−
9’442 m30’978 ft
Max alt.
784 m2’572 ft
Steepest
24%

Segments

Skip the map

Elevation profile: 220M

179 m – 784 m587 ft – 2’572 ft

Race plan

Plan your race from start to finish.

Pacing, aid stations and fueling timed to your effort on WTF Dark Sky 220 / Cherry Springs 110 / Wooly 50K, in one roadbook.

Build your race plan →

Feels like these

Where to stay

Find a place to stay near Pennsylvania for the race.

We may earn a commission if you book through this map, at no extra cost to you.

Spotted wrong info on this page? Tell us and we'll review it. Report it

← Back to calendar
Editions