MP 603 (Madill, OK) to MP 711 (Irving, TX)

MP 238 (Wellington, KS) to MP 550 (Eastern, TX)

This is the main north/south route through Oklahoma and runs alongside I-35 from Kansas to Texas.

MP 263 (Arkansas City, KS) to MP 411 (Gainesville, TX) - Note ending milepost is approximately 423 but 411 is designated for Gainesville. Duplicate mileposts exist on this subdivision

MP 128 (Pittsburg KS) to MP 338 (Heavener OK)

MP 338 (Heavener OK) to MP 530 (Shoreline TX)

MP 386 (Parsons, KS) to MP 565 (McAlester, OK)

MP 565 (McAlester, OK) to MP 755 (Tower 55/Fort Worth, TX)

MP 436 (Chickasha, OK) to MP 612 (Tower 55/Fort Worth)

MP 245 (Wichita, KS) to MP 436 (Chickasha, OK)

MP 0 (Chickasha) to MP 43 (Lawton)

MP 482 (Stillwater Crossing) to MP 515 (El Reno)

MP 298 (Pratt, KS) to MP 543 (Dalhart, TX)

MP 292 (Broken Arrow) to MP 325 (Muskogee)

MP 662 (Coffeyville, KS) to MP 498 (Van Buren, AR)

The Arkansas & Missouri Railroad operates 1 mile of track in Oklahoma (near Ft  Smith).

AOK Railroad operates a 118 mile corridor between Howe and McAlester and Shawnee to Midwest City

The AT & L Railroad (ATLT) operates between Watonga and El Reno and Geary to Bridgeport

The Blackwell Northern Gateway Railroad operates between the Blackwell Industrial Park and Wellington Kansas

The Cimarron Valley Railroad operates between Dodge City, KS to Boise City, OK, and Satanta, KS to Springfield, CO

Farmrail operates between Weatherford and Erick and Thomas/Clinton - Altus to Elmer. The Grainbelt Railroad is a sister railroad that jointly operates from Clinton.

Grainbelt operates from Enid through Clinton and Snyder to Frederick. Farmrail is a sister railroad that jointly operates from Clinton

The Kiamichi Railroad operates between Hope, AR and Madill, OK. A branch runs from Antlers, OK through Hugo to Paris, TX..

The Northwestern Oklahoma Railroad is located in Woodward and services a major railcar rebuilder

The Sand Springs Railway operates a 10 mile route between Tulsa and Sand Springs.

It is owned by OmniTRAX.

The South Kansas & Oklahoma Railroad operates Tulsa to Iola, KS; Chanute - Winfield, and Wellington KS; Cherryvale to Coffeyville, KS. SKOL also serves the Tulsa Port Authority from Owasso to the Port of Catoosa

The SLWC operates over 275 miles of track in Oklahoma, primarily handling mined, mineral, and industrial products.

Aggie Subdivison -- West Pawnee MP 8.46 to Stillwater MP 30.74

Sooner Subdivision -- Sapulpa MP 438.9 to Oklahoma City MP 536.4

The Texas, Oklahoma & Eastern Railroad operates between Valliant OK and Perkins AR. It operates jointly with sister railroad De Queen and Eastern Railroad. Both railroads are covered under this category.

The Tulsa-Sapulpa Union Railway operates 23 miles of track in Metro Tulsa, serving Sapulpa and Jenks.

The Wichita, Tillman and Jackson Railway operates a 100 mile line between Altus OK and Wichita Falls TX .

The Tulsa Port of Catoosa operates switching services within the port.

The Oklahoma Railway Museum is located at 3400 NE Grand Blvd (near NE 36th and I-35) in Oklahoma City.  The museum operates approximately 3 miles of track, providing passenger service on the 1st and 3rd Saturdays, April through October. The museum also operates Christmas trains in December and other special trains and yard movements throughout the year.