RailTrailWx logoRailTrailWx
ForecastExploreLogbookProfilesAboutPricingUpdatesFAQPrivacyTermsYouTube

© 2026 Entrain Weather, LLC. RailTrailWxᵀᴹ and the Entrain Weather Microclimate Engineᵀᴹ are services of Entrain Weather, LLC.

Back to Trail Explorer

Slate Heritage Trail

Slate Heritage Trail, Lehigh County, PA, 3.31 miles

Trail Facts

Length 3.3 mi
Elevation 380 to 470 ft
Grade 0.5% average
Shade cover 59%
Primary surface Crushed gravel
Secondary surface Asphalt, Cinder

Activities

E-biking · Biking · Walking · Running · Hiking · Birding · Fishing · Horseback riding · Cross-country skiing · and more

About This Trail

The Slate Heritage Trail follows Trout Creek for about three miles between Slatedale and the Main Street Trailhead in Slatington, where it meets the D & L Trail beside the Lehigh River. It uses the old Lehigh Valley Railroad slate branch, so the grade is rail flat, with only a gentle fall toward Slatington. Pavement covers the Slatington mile; crushed stone carries the rest west through Washington Township and Emerald to the Slatedale athletic fields. Four bridges cross the creek, including a restored railroad trestle and the Trout Run Covered Bridge with its picnic pavilion. Slate benches, a slate restroom building, and interpretive panels mark the quarry country the line once served.

RailTrailWx TIPS

Slate Heritage Trail

Your comfort. Prognosticated.

  • The trail follows Trout Creek down to the Lehigh River. Slatedale sits about 90 feet above the Slatington trailhead, so heading east is a slight downhill and heading west is a climb you will barely notice.
  • Trees along the creek shade the trail for much of its length, with a few deep-shade pockets.
  • The corridor runs roughly east-northeast to west-southwest. A west or southwest wind pushes you toward Slatington and works against you on the way back to Slatedale.
  • The trail is open from dawn until dusk and is free. Horses and cross-country skis are allowed, and dogs must be leashed.

-Cory

Trivia

  • Two Welsh quarrymen walking from Easton to Mauch Chunk in 1844 spotted slate leaning against Peter Heimbach's barn and recognized the stone of their home country.
  • A school slate factory opened in 1849 on the north branch of Trout Creek, and Slatington went on to call itself the school slate capital of the world.
  • By 1914 the Slatington area had more than twenty working quarries employing upwards of a thousand people, many of them Welsh immigrants.
  • Trail users cross four bridges: a restored original railroad trestle, two prefabricated pedestrian bridges set by volunteers, and the Trout Run Covered Bridge, built from the ground up and dedicated in 2004.

Climate

Excellent biking days per month, 2011-2025 climatology

In a typical year the Slate Heritage Trail has about 115 to 163 days of excellent weather for popular activities such as hiking, dog walking, birding, e-biking, running, biking, and walking, with April, May, and October the best months.

RailTrailWx Comfort Scores, for your activity.

Hourly comfort scores for the next 15 days of weather, tuned to your activity and your own thresholds.

Plan your visit to this trail. Get the best windows for a comfortable outing.

View the forecast

Enjoy the Slate Heritage Trail!

Peak Fall Color Climatology

Calendar of the typical peak fall color window along this trail

In half of past years, color along the Slate Heritage Trail peaks October 20 to November 1, typically around October 25. The trail has 39% deciduous coverage, with the majority being chestnut oak, red maple, northern red oak, white ash, and white oak.

History

Two Welsh quarrymen found slate leaning against a barn near Slatington in 1844 and knew what they were looking at. William Roberts and Owen Jones leased land and opened the first quarry the next year. A school slate factory followed in 1849 on the north branch of Trout Creek, and the town took the name Slatington from the stone. Slatedale, up the creek to the west, did the same. By 1914 more than twenty quarries were at work in the area, and many of the hands were Welsh. The Lehigh Valley Railroad opened a branch up Trout Creek in 1874 to carry freight and finished slate from the quarries to its main line at Slatington. Roofing slate, blackboards, and school slates rode this line to the river. The branch ran until 1947, and the quarry trade it served was already fading. In April 2001 a committee of the Northern Lehigh Historical Society took up the empty right-of-way as a rail trail, working with Slatington Borough, Washington Township, and Walnutport. Volunteers restored the original trestle over Trout Creek, set two pedestrian bridges, and raised the Trout Run Covered Bridge from the ground up. The Slate Heritage Trail opened on October 4, 2004, with the covered bridge dedicated the same year. The society still maintains the trail today, with slate benches, a slate restroom building, and interpretive panels along the way.

Trailheads

  • SlatedaleMILE 0Directions
  • Covered Bridge ParkMILE 2.1Directions
  • Slatington: Main Street TrailheadMILE 3.3Directions

Connects To

D & L Trail: Lehigh Canal (North)

Managed By

Northern Lehigh Historical Society

Further Reading

  • Northern Lehigh Historical Society · The Slate Heritage Trail | Walking, Running, Biking, Hiking
  • THE LINK Trail Network · Slate Heritage Trail in Slatington, PA | THE LINK Trail Network
  • Northern Lehigh Historical Society · Northern Lehigh Historical Society | Home
  • Pennsylvania DCNR · Slate Heritage Trail
  • Timeline of Slatington History
  • MarkerQuest · MarkerQuest: Slate Industry, Lehigh and Northampton Counties

Nearby trails

D & L Trail: Lehigh Canal (North)

5.6 mi·PA
ExploreForecast

Ironton Rail Trail

9 mi·PA
ExploreForecast

D & L Trail: Lehigh Canal (South)

41 mi·PA
ExploreForecast