Rachel Carson Trail

Rachel Carson Trail is a 45.7-mile hiking route in Allegheny County, Pennsylvania, with termini at Harrison Hills County Park (east) and North Park (west). It’s a day-hiking trail: it runs through mixed land—parks and wooded corridors, plus segments along utility/pipeline rights-of-way—and it has no camps or shelters along the way.

For navigation, the trail is marked entirely with yellow “blazes.” A double blaze is used to signal a turn is approaching, and the route is designed to be followed that way rather than by signage for formal road networks.

The terrain is often rugged and primitive, with steep climbs and creek crossings that don’t rely on footbridges. Some sections cut through fields and right along power or gas lines, and there are also stretches that pass through residential woods.

Land access is largely arranged across private property, so the exact line can shift over time. That means hikers should expect occasional reroutes and follow the current yellow blazes on the ground rather than relying on older assumptions about where the trail goes between landmarks.

Route planning for specific distances and trailhead-to-trailhead logistics is easiest when you use the conservancy’s trip-planning tool, since it’s organized around parking points and segment lengths along the same corridor.

If you want a structured long-day objective, the Rachel Carson Trail Challenge is an annual endurance hike that targets a 37-mile, one-day sunrise-to-sunset attempt on nearly the entire trail, with shorter options offered the same day.

More information: Wikipedia, Rachel Carson Trails Conservancy, Rachel Carson Trail