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The Paoli/Thorndale Line, formerly known as the R5, is a SEPTA Regional Rail service running from Center City Philadelphia to Thorndale in Chester County on Amtrak's Philadelphia to Harrisburg Main Line which is part of the Keystone Corridor which in turn was once the Main Line of the Pennsylvania Railroad.

Paoli/Thorndale Line
Paoli Thorndale.PA SEPTA Line.jpg
A westbound Paoli/Thorndale Line train departing from the Bryn Mawr station.
TypeCommuter rail
SystemSEPTA Regional Rail
TerminiTemple University
Daily ridership24,018
Operator(s)SEPTA Regional Rail
Rolling stockElectric Multiple Units, push-pull trains
Track gauge4 ft 8 12 in (1,435 mm) standard gauge
Route map

not served by SEPTA trains
not served by SEPTA trains
35.2 mi
56.6 km
32.8 mi
52.8 km
28.7 mi
46.2 km
27.7 mi
44.6 km
21.8 mi
35.1 km
19.9 mi
32 km
18.6 mi
29.9 km
17.5 mi
28.2 km
16.4 mi
26.4 km
15.4 mi
24.8 km
14.5 mi
23.3 km
13.7 mi
22 km
St. Davids
13.0 mi
20.9 km
12.0 mi
19.3 km
10.9 mi
17.5 km
10.1 mi
16.3 km
Bryn Mawr
9.1 mi
14.6 km
8.5 mi
13.7 km
7.4 mi
11.9 km
6.8 mi
10.9 km
6.0 mi
9.7 km
5.4 mi
8.7 km
52nd Street
0.9 mi
1.4 km
30th Street Station
Amtrak NJ Transit
0 mi
0 km
Suburban Station
0.5 mi
0.8 km
Jefferson Station
2.1 mi
3.4 km
Temple University


SEPTA and Amtrak share the four track "Main Line" grade of the "Keystone Corridor" between Philadelphia and Thorndale

This branch makes local stops between Thorndale and Center City, Philadelphia along Amtrak's Philadelphia to Harrisburg Main Line, an electrified 104-mile two to four-track high-speed route between Harrisburg Transportation Center in Harrisburg and 30th Street Station in Philadelphia. The line was originally part of Pennsylvania's "Main Line of Public Works", a series of canals and railroads to connect Philadelphia with Harrisburg, Pittsburgh, and points west built between 1826 and 1834 by the Commonwealth of Pennsylvania. The tracks subsequently became part of the Main Line of the Pennsylvania Railroad before eventually becoming Amtrak's Keystone Corridor. The "Main Line" also refers to the affluent Philadelphia suburbs along the line of the same name.

Prior to the late-1980s, all commuter rail operations went from Suburban Station to Paoli, the westernmost census designated place along the Main Line. Because of this earlier operation, local residents called the R5 "the Paoli Local". Currently, all Paoli turn-around trains, which operate alternately on Saturdays and exclusively on Sundays, now use the nearby Malvern train station as its last stop (the Paoli train yard was closed down in the mid-1990s and is in the process of being converted into extra parking, and eventually, a new Paoli train station), and uses the Frazer train yard as a turn-around location. Prior to November 10, 1996 the service went as far west as Parkesburg,[1] but service was truncated to Downingtown because Amtrak lacked facilities to turn SEPTA trains around, and trains were forced to deadhead out to Lancaster. Service was extended from Downingtown to a new station in Thorndale on November 22, 1999.[2]

A recent proposal to extend the Paoli/Thorndale Line service further west from its terminus at Thorndale to Lancaster has been discussed by regional planning organizations, government officials, and members supporting the Capital Red Rose Corridor, which will provide commuter rail along the Philadelphia to Harrisburg Main Line between Lancaster and Harrisburg.[3][4] Proponents of the Paoli/Thorndale Line extension to Lancaster, support that by allowing SEPTA and Capital Area Transit to operate commuter rail serving smaller stations along the Keystone Corridor, it will allow for fewer stops and increased speeds for Amtrak's Keystone and Pennsylvanian trains between Philadelphia's 30th Street Station and the Harrisburg Transportation Center in downtown Harrisburg. It is also suggested by community leaders and transportation officials that the addition of commuter rail serving portions of Lancaster and Dauphin counties will help to alleviate future traffic congestion stemming from increased development along the same corridor.[4] The entire main line between Thorndale, Lancaster and Harrisburg is currently electrified.

SEPTA announced on March 7, 2019 that service would be extended back to Coatesville "in the near future." A new Coatesville station is planned to be constructed by the Pennsylvania Department of Transportation (PennDOT) at 3rd Avenue and Fleetwood Street near the existing Amtrak station. The station is currently in the design phase and once construction begins, it will take three years to complete and bring SEPTA service to Coatesville.[5] In announcing the return of service to Coatesville, Chester County commissioner Terrence Farrell announced $1 million in funding to kick-start a parking garage to coincide with SEPTA's return to the station via the Paoli/Thorndale Line.[6]


Electrified service between Philadelphia and Paoli was opened on September 11, 1915. As the first of the local commuter and long-distance line to be electrified, the line was used as an "experiment" for powering trains using AC overhead catenary wires. The previous commuter line to be electrified was the Long Island Rail Road in New York City, but this line used the DC third rail similar in nature to the New York City Subway system and most other heavy-rail interurbans. Between 1915 and the 1960s, the former Pennsylvania Railroad used the MP-54 electric multiple-unit (EMU) railcars, which were brick red ("Tuscan Red") in color (green in the Penn Central era) and had characteristic "owl eye" round windows at car ends.

The MP-54s were replaced in the 1960s and 1970s with the Silverliner EMU cars, which are still in use today. More recently, SEPTA acquired push-pull coaches from the Bombardier corporation, which were hauled by AEM-7 electric locomotives similar to those used by Amtrak and New Jersey Transit. The AEM-7 locomotives were replaced with ACS-64 electric locomotives in 2018.

Between 1984 and 2010 the route was designated R5 Paoli and R5 Thorndale as part of SEPTA's diametrical reorganization of its lines. Paoli trains operated through the city center to the Lansdale/Doylestown Line on the ex-Reading side of the system.[7] The R-number naming system was dropped on July 25, 2010.[8] As of 2019, most Paoli/Thorndale Line trains continue through Center City to points along the Lansdale/Doylestown Line on weekdays and points on the West Trenton Line on weekends.[9]

As a part of the Keystone Corridor upgrade projects conducted by Amtrak and PennDOT, the line was upgraded in 2007 with new concrete ties, continuous welded rails, and overhead lines and substations. This upgrade allows SEPTA and Amtrak to operate multiple trains at the same time in the same manner as that found on the Northeast Corridor.

SEPTA activated positive train control on the Paoli/Thorndale Line on May 1, 2017.[10]


The Pennsylvania Railroad opened Radnor in 1872
The current building at Ardmore dates from the 1950s

The Paoli/Thorndale Line includes the following stations west of the Center City Commuter Connection; stations indicated with a gray background are closed.

Station Miles (km)
from Center City
Connections / notes
C 52nd Street 4.0 miles (6.4 km)   August 23, 1980[12]
2 Overbrook   5.4 miles (8.7 km)     SEPTA:   65, G
Philadelphia city line
Merion 6.0 miles (9.7 km)    
Narberth 6.8 miles (10.9 km)     SEPTA:   44
Wynnewood 7.4 miles (11.9 km)     SEPTA:   105
Ardmore 8.5 miles (13.7 km)     Amtrak: Keystone Service
SEPTA:   44, 103, 105, 106
Haverford 9.1 miles (14.6 km)     SEPTA:   105, 106
3 Bryn Mawr 10.1 miles (16.3 km)     SEPTA:   105, 106
Rosemont 10.9 miles (17.5 km)     SEPTA:   105, 106
Villanova 12.0 miles (19.3 km)     SEPTA:   106
Radnor   13.0 miles (20.9 km)     SEPTA:   106
St. Davids 13.7 miles (22.0 km)    
Wayne   14.5 miles (23.3 km)     SEPTA:   106
Strafford   15.4 miles (24.8 km)    
Devon 16.4 miles (26.4 km)     SEPTA:   106
Berwyn   17.5 miles (28.2 km)     SEPTA:   106
Daylesford 18.6 miles (29.9 km)     SEPTA:   106
4 Paoli 19.9 miles (32.0 km)     Amtrak: Keystone Service, Pennsylvanian
SEPTA:   92, 106, 204, 205, 206
Malvern 21.8 miles (35.1 km)     SEPTA:   92
Exton   27.7 miles (44.6 km)     Amtrak: Keystone Service, Pennsylvanian
SEPTA:   92
Krapf Transit:   "A"
Whitford 28.7 miles (46.2 km)    
Downingtown 32.8 miles (52.8 km)     Amtrak: Keystone Service
Krapf Transit:   "A"
TMACC:   Evening Link
Thorndale   35.2 miles (56.6 km) November 22, 1999 (1999-11-22)[2]   Krapf Transit:   "A"
TMACC:   Evening Link
Coatesville   November 10, 1996[13] Amtrak: Keystone Service
Parkesburg   November 10, 1996[13] Amtrak: Keystone Service


The Paoli/Thorndale Line has the highest total ridership on the system. Between FY 2008–FY 2014 yearly ridership ranged from 6–6.5 million. In FY 2014 its 6,367,855 passengers exceeded the next highest, the Lansdale/Doylestown Line, by nearly two million.[14]:94[15][16][17][18][19][20]

FY 2008
FY 2009
FY 2010
FY 2011
FY 2012
FY 2013
FY 2014


  1. ^ "SEPTA Board Cuts Service; But Opposition is Spirited". The Philadelphia Daily News. October 25, 1996. p. 12. Retrieved July 19, 2011.
  2. ^ a b Schogol, Marc (November 21, 1999). "SEPTA extends the R5 line to Thorndale". The Philadelphia Inquirer. p. 31. Retrieved February 22, 2019 – via
  3. ^ Capital Red Rose Corridor map with SEPTA extension Modern Transit Partnership, accessed February 5, 2010.
  4. ^ a b Letter supporting the Capital Red Rose Corridor Archived 2011-07-28 at the Wayback Machine South Central Assembly, accessed February 5, 2010.
  5. ^ Rodgers, Lucas (March 7, 2019). "SEPTA Regional Rail set to return to Coatesville". Daily Local News. West Chester, PA. Retrieved March 7, 2019.
  6. ^ Melwert, Jim (March 7, 2019). "SEPTA to bring back regional rail service to Coatesville". Philadelphia, PA: KYW (AM). Retrieved March 10, 2019.
  7. ^ Vuchic, Vukan; Kikuchi, Shinya (1984). General Operations Plan for the SEPTA Regional High Speed System. Philadelphia: SEPTA. pp. 2–8.
  8. ^ Lustig, David (November 2010). "SEPTA makeover". Trains Magazine. Kalmbach Publishing: 26.
  9. ^ "Paoli/Thorndale Line schedule" (PDF). SEPTA. December 16, 2018. Retrieved December 24, 2018.
  10. ^ "Positive Train Control Update". SEPTA. May 1, 2017. Retrieved May 17, 2017.
  11. ^ "Paoli/Thorndale Line Timetable" (PDF). Philadelphia, Pennsylvania: Southeastern Pennsylvania Transportation Authority. September 10, 2017. Retrieved October 28, 2017.
  12. ^ Baer, Christopher T. (April 2015). "A GENERAL CHRONOLOGY OF THE SUCCESSORS OF THE PENNSYLVANIA RAILROAD COMPANY AND THEIR HISTORICAL CONTEXT: 1980-1989" (PDF). Pennsylvania Railroad Technical and Historical Society. Retrieved October 28, 2017.
  13. ^ a b Dougherty, Frank (October 25, 1996). "Septa Board Cuts Service But Opposition Is Spirited". The Philadelphia Inquirer. Retrieved October 25, 2017.
  14. ^ "Fiscal Year 2016 Annual Service Plan" (PDF). SEPTA. June 2015. Retrieved August 13, 2016.
  15. ^ "Fiscal Year 2015 Annual Service Plan" (PDF). SEPTA. May 2014. p. 60. Retrieved August 13, 2016.
  16. ^ "Fiscal Year 2014 Annual Service Plan" (PDF). SEPTA. May 2013. p. 44. Retrieved August 13, 2016.
  17. ^ "Fiscal Year 2013 Annual Service Plan" (PDF). SEPTA. May 2012. p. 55. Retrieved August 13, 2016.
  18. ^ "Fiscal Year 2012 Annual Service Plan" (PDF). SEPTA. July 2011. p. 94. Retrieved August 13, 2016.
  19. ^ "Fiscal Year 2011 Annual Service Plan" (PDF). SEPTA. June 2010. p. 70. Retrieved August 13, 2016.
  20. ^ "FY 2010 Annual Service Plan" (PDF). SEPTA. June 2009. p. 63. Retrieved August 13, 2016.

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