Start at Asaph, out-and-back north to Wellsboro Junction (~6 mi each way), back to Asaph, then out-and-back south to Blackwell (~19 mi each way) -- one full 50-mile lap -- repeated twice for 100 miles and 4 passes through the Pine Creek Gorge canyon section.
Course is a converted rail-trail: finely crushed limestone, 20 ft wide, ~2% average grade (900 ft loss over the full 63-mile trail, not all of which is on this course). Marketed and widely reported as flat and beginner/first-100-friendly, but one entrant's caveat is worth keeping: "flat course doesn't always mean easy course." The Darling Run to Blackwell leg (used, e.g., by a solo relay runner since no exchange is allowed at Tiadaghton) is 16.9 miles, the longest gap between any two aid stations on the course.
An out-and-back ultra on the Pine Creek Rail Trail through the Pine Creek Gorge (the "Grand Canyon of Pennsylvania") near Wellsboro, PA, run concurrently at four distances (100 Mile, 100K, 50 Mile, Marathon) from a shared start/finish at Asaph. The trail is finely crushed limestone, 20 feet wide, closed to motor vehicles, and loses only about 900 feet over 63 miles (a 2% grade) -- flat enough that the race markets itself as beginner-friendly and a common choice for a first 100-miler.
First run at least by 2011 (UltraSignup results are on file back to 2011). The 100-mile course was originally longer: a 2013 crew report describes the out-and-back continuing south past Blackwell through Slate Run and Cedar Run aid stations to a turnaround near the village of Cammal (Blackwell was passed at mile 79.1, not the turnaround). By 2016 (per an archived course-map image) and continuing through the current 2026 listing, the course has been shortened to turn around AT Blackwell, with the Slate Run/Cedar Run/Cammal stations no longer part of the race.
| Mile | Station | Cutoff | Crew | Bag | Pacer | Med | To next |
|---|---|---|---|---|---|---|---|
| 0.00 | Asaph (USGS Building) | ? | ● | ● | · | ? | 6.00 |
| 6.00 | Wellsboro Junction | ? | ● | ? | ● | ? | 6.00 |
| 12.00 | Asaph (USGS Building) | ? | ● | · | ● | ? | 3.00 |
| 15.00 | Darling Run | ? | ● | ? | ● | ? | 8.00 |
| 23.00 |
Tiadaghton
None · no cell service
|
? | · | · | · | ? | 7.50 |
| 30.50 | Blackwell | ? | ● | ● | ● | ? | 7.50 |
| 38.00 |
Tiadaghton
None · no cell service
|
? | · | · | · | ? | 8.00 |
| 46.00 | Darling Run | ? | ● | ? | ● | ? | 4.00 |
| 50.00 | Asaph (USGS Building) | ? | ● | · | ● | ? | 6.00 |
| 56.00 | Wellsboro Junction | ? | ● | ? | ● | ? | 6.00 |
| 62.00 | Asaph (USGS Building) | ? | ● | · | ● | ? | 3.00 |
| 65.00 | Darling Run | ? | ● | ? | ● | ? | 8.00 |
| 73.00 |
Tiadaghton
None · no cell service
|
? | · | · | · | ? | 7.50 |
| 80.50 | Blackwell | ? | ● | ● | ● | ? | 8.50 |
| 89.00 |
Tiadaghton
None · no cell service
|
? | · | · | · | ? | 8.00 |
| 97.00 | Darling Run | ? | ● | ? | ● | ? | 3.00 |
| 100.00 | Asaph (USGS Building) | ? | ● | ? | ? | ? | ? |
From start: head south on Marsh Creek Rd toward US-6 W (0.4 mi); turn left onto US-6 E (8.1 mi); turn left onto PA-287 N (0.2 mi); turn left onto Butler Rd; destination on left at end of road (Pag-O-Mar Market on Butler Rd has sandwiches/drinks/ice cream).
sites.google.comFrom start: head south on Marsh Creek Rd toward US-6 W (0.4 mi); turn left onto US-6 E (0.2 mi); turn right onto PA-362 E (0.8 mi); destination on the right in approx 1/2 mile; turn right down the access road just past the brown 'Pine Creek Rail Trail Darling Run Access' sign.
sites.google.comFrom start: head south on Marsh Creek Rd toward US-6 W (0.4 mi); turn left onto US-6 E (8.2 mi); continue onto Main St, Wellsboro (0.2 mi); turn left onto PA-287 S / Central Ave at the second light in Wellsboro; follow PA-287 S (11.7 mi); turn right toward PA-287 S/PA-414 W (207 ft); turn right onto PA-414 W (5 mi); turn right onto Blackwell Square/T301 -- Miller's Store is on the left (ice cream, drinks); aid station on the left; parking limited.
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