The best running trails in Warren County

At the southern trailhead of the Gerard Hiking Trail, the historic site of Petroleum Center marks what was once a bustling 19th‑century oil boomtown. Today, hikers can explore a self-guided interpretive trail featuring a boardwalk, informative signs, and the only visible remnant—a set of bank steps—from the town’s heyday. The trail winds through a wooded gorge, crosses Oil Creek via a pedestrian bridge, and passes modern replicas of oil derricks and foundations scattered across the hillside. Interpretive panels along the route connect you with stories of early oil entrepreneurs, rise‑and‑fall boomtown life, and the transformation of this valley into a forested state park. Restrooms, water access, and a visitor center are also available at the park office.

From this ridgeline viewpoint, hikers can spot a series of replica oil derricks tucked into the treeline across the valley. These reconstructions represent real 19th-century oil ventures like Great Lakes Petroleum and Ayers & Ashenhurst, a nod to the boomtown era that once defined this landscape. It’s a rare and fascinating blend of nature and history—quiet forested hills now reclaiming a place that helped ignite the world’s first oil rush.

This peaceful spot offers a sweeping ridgeline view across the forested slopes of Oil Creek State Park. From here, you can look out toward the opposing hillside, where a patchwork of pine and deciduous trees frames the landscape. Especially stunning in the morning light, it’s a great place to pause, catch your breath, and appreciate the rolling terrain that defines this section of the Gerard Trail.

Cow Run Shelter is one of two designated overnight areas along the Gerard Hiking Trail. It features tent sites and 6 Adirondack-style shelters, each equipped with a fireplace. The site includes seasonal water access and restrooms, and camping is only permitted in designated areas. Nestled deep in Oil Creek State Park, it’s a quiet, forested spot perfect for resting after a long day’s hike. Reservations are required in advance—check the website for details and booking instructions: https://elibrary.dcnr.pa.gov/GetDocument?docId=1743343&DocName=OICR_ReservationInstructions.pdf

A standout feature of the Oil Creek State Park, this narrow suspension bridge stretches across Oil Creek with a gentle sway underfoot—earning it the nickname “Swinging Bridge.” Originally built to connect oil workers to both sides of the valley, it now serves as a fun and functional crossing for hikers. With forested hills rising on both sides and the steady flow of the creek below, it's a scenic and slightly thrilling moment on the trail—perfect for a pause, a photo, or just enjoying the gentle motion and views.

Tucked beneath a canopy of hardwoods, this sturdy wooden footbridge crosses a rocky, seasonal stream bed—one of several charming crossings along the Gerard Trail. Whether the stream below is flowing or dry, the bridge offers a quiet pause in the forest, perfect for a water break, a photo, or simply soaking in the lush, fern-dotted surroundings. Keep an eye out for salamanders and other small wildlife near the cool, shaded rocks below.

This junction marks your option to branch off the main Gerard Hiking Trail and descend toward Oil Creek via the West Side Trail. Take this spur for access to the historic swinging bridge, a beloved photo spot that sways gently over Oil Creek, offering scenic views and a touch of adrenaline. The trail also passes remnants of old oil wells and industry ruins—key markers in the story of Pennsylvania’s oil boom. It’s a rewarding detour for history buffs and creekside explorers alike.

Tucked away near the ghost town of Pioneer, Gregg Falls offers a quiet, scenic payoff along the Gerard Hiking Trail. This 15- to 20-foot seasonal waterfall tumbles over mossy ledges into a shaded ravine—especially photogenic after a heavy rain. Keep an eye out for old oil pipes and relics in the surrounding woods, a reminder that nature here is reclaiming what industry left behind. A peaceful, reflective stop where history and wilderness meet.