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Montour Trail: Main Line

Montour Trail: Main Line, Allegheny, Washington Counties, PA, 47.76 miles

Trail Facts

Trail of the Year
Named 2017 by Pennsylvania DCNR
Length 48 mi
Elevation 714 to 1172 ft
Grade 0.4% average
Shade cover 50%
Primary surface Crushed gravel
Secondary surface Asphalt

Activities

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

About This Trail

The Main Line is the Montour Trail's 48-mile arc around the western and southern reaches of Pittsburgh, from the Ohio River at Coraopolis to the Monongahela at Clairton. It climbs the Montour Run valley to Enlow and Imperial, crosses the McDonald Viaduct over the Panhandle Trail, passes through the National and Greer tunnels near Cecil and Hendersonville, and drops down Peters Creek to Clairton, where a short on-road stretch and a park road fill the last gap. The surface is smooth crushed limestone with asphalt sections, and grades never top 2 percent. Three branches leave it: the Airport Connector at Enlow, the Westland Branch at Gilmore Junction, and the Bethel Branch at Library Junction.

RailTrailWx TIPS

Montour Trail: Main Line

Your comfort. Prognosticated.

  • Both ends sit near river level and the middle rides the plateau about 450 feet higher, so there is a steady climb whichever way you start. The grades stay at rail-trail pitch, never above 2 percent.
  • About half of the trail is under intermittent tree cover, and the valley stretches along Montour Run, Chartiers Creek, and Peters Creek are the shady ones.
  • The Enlow, National, and Greer tunnels are cool inside on a summer afternoon, and the National Tunnel drips enough that its floor was paved to stop erosion. Check the council's trail alerts before counting on a tunnel: the National Tunnel was posted closed indefinitely in September 2026.
  • Montour Run experiences flooding: Hurricane Ivan's rains in 2004 washed out nine miles of the airport-area section, so treat the northern valley with care after heavy rain.
  • In hunting season, hunters may only cross the trail with unloaded weapons to reach adjacent land. For trail users, the council suggests bright clothing or choosing a more residential section such as Peters Township or the Bethel Branch.
  • Horses are allowed on the trail shoulders only in Cecil Township between Morganza Road and the Route 980 and Route 50 crossing.
  • This is an urban trail with a lot of foot traffic. Be mindful of each other and enjoy the trail together.

-Cory

Trivia

  • The National Tunnel takes its name from the National Coal Company mines the railroad once served, and at more than 600 feet it is the trail's longest tunnel.
  • The McDonald Viaduct runs about 970 feet and is the trail's longest bridge; it was dedicated at a TrestleFest in 2003.
  • The Enlow Tunnel is a 575-foot straightaway, so you can see daylight at the far end from the moment you enter.
  • The Greer Tunnel is 235 feet long and sits beside the Chartiers Creek High Bridge, the highest bridge on the trail; both date from the early 1900s.
  • The Green Man Tunnel at trail mile 39.5 was built in 1924 for the Pennsylvania Railroad beneath a Baltimore and Ohio trestle; South Park Township now stores road salt in it.
  • The Green Man legend grew around Raymond Robinson, a boy who touched a 22,000-volt line in 1918, survived, and walked the local roads at night until his death in 1985.
  • The first Montour 100K road race in March 1993 ran from Clairton to Coraopolis, and only three runners finished.
  • Hurricane Ivan's floodwaters tore washouts several feet deep in September 2004, closing nine miles of the airport-area section for repairs.
  • The Montour Railroad's first locomotive was lettered Cliff Mine, after the station where the Dickson Mine loaded its first coal.
  • Of 18 rail-over-highway bridges in Washington County, the Public Utility Commission let ten stand for trail use in 2001; the rest had to come down.

Climate

Excellent biking days per month, 2011-2025 climatology

In a typical year the Montour Trail: Main Line has about 111 to 152 days of excellent weather for popular activities such as hiking, dog walking, e-biking, birding, 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.

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Enjoy the Montour Trail: Main Line!

Peak Fall Color Climatology

Calendar of the typical peak fall color window along this trail

In half of past years, color along the Montour Trail: Main Line peaks October 18 to 29, typically around October 23. The trail has 37% deciduous coverage, with the majority being black cherry, red maple, white ash, sugar maple, northern red oak, and yellow-poplar.

History

The Montour Railroad hauled its first coal in June 1879, from the Dickson Mine at Cliff Mine to barges on the Ohio River at Coraopolis. The Imperial Coal Company had organized the railroad in 1877 to reach its mines near Imperial. Passenger and mail trains ran the main line from 1879 until 1927. In 1899 the Pittsburgh Coal Company bought Imperial Coal and its railroad. From 1913 to 1914 it laid a 32-mile Mifflin Extension around Pittsburgh's South Hills to Bethel Park. Branches followed: Library in 1918, Muse in 1921, and Westland in 1928. During World War II the Montour shipped more than 300,000 tons of coal a month. The coal market fell in the 1970s, mines closed, and the Pittsburgh and Lake Erie, sole owner by 1976, cut the line back. The last Montour crew was called on November 1, 1984. Full abandonment took effect in May 1986. Volunteers chartered the Montour Trail Council in November 1989. In 1991 it bought 38 miles of right of way from the P&LE for $220,000. The first 4.4 miles of trail opened at Cecil Park in October 1992. The council has built the trail piece by piece since, earning National Recreation Trail status in 2004. The Main Line segment holds the whole arc from Coraopolis to Clairton: the Enlow, National, and Greer tunnels, the McDonald Viaduct, and the last miles along Peters Creek on a former Pennsylvania Railroad branch bought in 1997.

Trailheads

  • Montour Road TrailheadMILE 0.9Directions
  • Hassam Road TrailheadMILE 2.2Directions
  • Beaver Grade TrailheadMILE 4Directions
  • Park ManorMILE 5.1Directions
  • Cliff Mine TrailheadMILE 6.8Directions
  • EnlowMILE 8.6Directions
  • ImperialMILE 9.5Directions
  • Boggs TrailheadMILE 12.4Directions
  • Quicksilver TrailheadMILE 15.4Directions
  • Fort Cherry TrailheadMILE 17.6Directions
  • McDonaldMILE 18.4Directions
  • Galati Road TrailheadMILE 22.2Directions
  • VeniceMILE 23.1Directions
  • Cecil ParkMILE 23.6Directions
  • Ridgewood TrailheadMILE 24.5Directions
  • McConnell Road: National TunnelMILE 25.7Directions
  • Kurnick TrailheadMILE 26.7Directions
  • HendersonvilleMILE 28.2Directions
  • Linwood: Greer TunnelMILE 30Directions
  • Route 19 TrailheadMILE 31.5Directions
  • Maplewood TrailheadMILE 32.1Directions
  • East McMurrayMILE 33.1Directions
  • Peterswood ParkMILE 33.7Directions
  • Library: PRT Library StationMILE 37.1Directions
  • Stewart TrailheadMILE 38Directions
  • Piney Fork West TrailheadMILE 39Directions
  • Gill Hall TrailheadMILE 41.9Directions
  • Route 51 Park and RideMILE 45.4Directions
  • ClairtonMILE 47.8Directions

Connects To

Panhandle Trail · Montour Trail: Airport Connector · Montour Trail: Westland Branch · Montour Trail: Bethel Branch

Managed By

Montour Trail Council

Further Reading

  • Montour Trail Council · Montour Trail
  • Montour Trail Council · Frequently Asked Questions
  • Pennsylvania DCNR · Montour Trail
  • Montour Railroad Historical Society · A Brief History of the Montour Railroad
  • Montour Trail Council · Trippin' Down the MTC Milestones: Montour Trail History 1989 to 2019
  • Rails-to-Trails Conservancy · Top 5 Attractions on the Montour Trail
  • Montour Railroad Historical Society · Green Man Tunnel
  • Wikipedia · Montour Trail
  • Rails-to-Trails Conservancy · Pennsylvania's Montour Trail: March 2015 Trail of the Month
  • FreeWheeling Easy in Western Pennsylvania · Montour Trail
  • Montour Trail Council · Railroad History
  • Wikipedia · Montour Railroad
  • Montour Trail Council · Trailheads
  • Montour Trail Council · Trail Alerts

Nearby trails

Three Rivers Heritage Trail: South

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Montour Trail: Bethel Branch

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Three Rivers Heritage Trail: North

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