| Train Name |
Railroad |
Train Endpoints |
Operated |
| Sacramento Daylight |
Southern Pacific |
Lathrop, CA–Sacramento, CA |
1946–1971 |
| Safety Express |
Chessie System |
|
1980–1981 |
| Saint |
Santa Fe |
Los Angeles, CA–San Francisco, CA |
|
| St. Clair |
Amtrak |
Chicago, IL–Detroit, MI |
1971–1980 |
| St. Lawrence Express |
New York Central |
New York City–Utica, New York |
|
| St. Louis Limited |
Wabash |
Detroit, MI–St. Louis, MO |
|
| St. Louis Special[1]:235 |
Southern |
Asheville, NC–St. Louis, MO |
1912–1917 |
| St. Louis Special |
Wabash (Wabash renamed train Wabash Cannon Ball 4/50) |
Detroit, MI–St. Louis, MO |
1949–1964 |
| St. Louis Mule |
Amtrak |
St. Louis, MO–Kansas City, MO |
1980–2009 |
| Salt City Express |
|
New York, NY–Syracuse, NY |
|
| Salt Lake Special |
Union Pacific |
Butte, MT–Salt Lake City, UT |
|
| Sam Houston Zephyr |
Burlington-Rock Island Railroad |
Fort Worth, TX–Houston, TX |
1936–1966 |
| San Diegan |
|
Los Angeles, CA–San Diego, CA |
1938–2000 |
| San Francisco Challenger |
Southern Pacific and Union Pacific |
Chicago, IL–San Francisco, CA |
1936–1947 |
| San Francisco Chief |
Santa Fe |
Chicago, IL–San Francisco, CA |
1954–1971 |
| San Francisco Overland |
Southern Pacific |
San Francisco–Ogden, Utah |
1947–1963 |
| San Francisco Zephyr |
Amtrak |
Chicago, IL–Oakland, CA |
1972–1983 |
| San Joaquin Daylight |
Southern Pacific |
Los Angeles, CA–San Francisco, CA |
1941–1971 |
| San Juan Express |
Denver & Rio Grande Western |
Alamosa, CO–Durango, CO |
1937–1951 |
| San Joaquin |
Amtrak |
Bakersfield, CA–Oakland, CA/Sacramento, CA |
1974–present |
| Sangamon |
Illinois Terminal Railroad |
St. Louis, MO – Peoria, IL |
1950–1956 |
| Santa Fe De Luxe |
Santa Fe |
Chicago, IL–Los Angeles, CA |
1911– |
| Scenic Limited[2] |
Denver & Rio Grande Western, Missouri Pacific Railroad, and Western Pacific |
St. Louis, MO–San Francisco, CA |
1915–1946 |
| Scout |
Santa Fe |
Chicago, IL–Los Angeles, CA |
|
| Scranton Flyer |
Central Railroad of New Jersey |
Philadelphia, PA–Scranton, PA |
|
| Seminole |
Illinois Central Railroad, Central of Georgia Railroad, and Atlantic Coast Line |
Chicago, IL–Jacksonville, FL |
1909-1969 |
| Senator |
Pennsylvania Railroad and New Haven Railroad; later Amtrak |
Washington, DC–Boston, MA |
|
| Senator |
Southern Pacific |
Oakland, CA–Sacramento, CA |
|
| Shasta Daylight |
Southern Pacific |
Oakland, CA–Portland, OR |
1949–1967 |
| Shavano |
Denver & Rio Grande Western |
Salida, CO–Gunnison, CO |
1937–1940 |
| Shawnee |
Illinois Central/Amtrak |
Chicago, IL–Carbondale, IL |
1969–1986 |
| Shelter Island Express |
Long Island Rail Road |
Long Island City–Greenport, NY |
1901–1903, 1923–1942 |
| Shenandoah |
Baltimore & Ohio Railroad |
Washington, DC–Cincinnati, OH |
|
| Shenandoah |
Amtrak |
Washington, DC–Cincinnati, OH |
1976–1981 |
| Shinnecock Bay Express |
Long Island Rail Road |
Long Island City–Montauk, NY |
1926–1950 |
| Shoppers Special |
Pere Marquette |
Chicago, IL–Grand Rapids, MI |
|
| Shoreland 400 |
Chicago and North Western Railway |
Chicago, IL–Green Bay, WI |
|
| Shreveporter |
Louisiana and Arkansas |
Hope, AR–Shreveport, LA |
1928–1961 |
| Silver Comet |
Seaboard Air Line |
New York, NY–Birmingham, AL |
1947–1969 |
| Silver Meteor |
Seaboard Air Line, later Amtrak |
New York, NY–Tampa, FL/Miami, FL |
1939–present |
| Silver Star |
Seaboard Air Line, later Amtrak |
New York, NY–Tampa, FL/Miami, FL |
1947–present |
| Silver Streak Zephyr |
Chicago, Burlington & Quincy |
Kansas City, MO–Lincoln, NE |
1940– |
| Silverliner Service |
|
Philadelphia, Pennsylvania–Harrisburg, Pennsylvania |
|
| Sioux |
Milwaukee Road |
Chicago, IL–Rapid City, SD |
1929–1971 |
| Skyland Special |
Southern |
Ashville, NC/Charlotte, NC–Jacksonville, FL |
1950s |
| Skunk |
California Western Railroad |
Fort Bragg, California–Willits, California |
1926– |
| Somerset Hills Express |
Lackawanna, Erie Lackawanna, Conrail, New Jersey Transit |
Hoboken, New Jersey–Gladstone, New Jersey |
1940s–2001 |
| Soo-Dominion |
Soo Line and Canadian Pacific |
Minneapolis–Saint Paul, MN–Vancouver, BC |
|
| South Shore Express |
New York Central |
Chicago, IL–Toledo, OH |
|
| South Wind |
Florida East Coast, Pennsylvania, Louisville and Nashville and Atlantic Coast Line |
Chicago, IL–Miami, FL |
1940–1971 |
| Southern Belle |
Kansas City Southern |
Kansas City, MO–New Orleans, LA |
1940–1969 |
| Southern Crescent |
|
Boston, MA–New Orleans, LA |
1970–1979 |
| Southern Michigan Express |
Detroit and Mackinac Railway |
Detroit, MI–Cheboygan, MI |
|
| Southern Scenic |
Missouri Pacific |
Memphis, TN–Kansas City, MO |
1931–1952 |
| Southerner |
Pennsylvania and Southern |
New York, NY–New Orleans, LA |
1941–1970 |
| Southerner |
Missouri Pacific and Texas and Pacific |
Kansas City, MO–New Orleans, LA |
1925– |
| Southland |
Pennsylvania, Louisville & Nashville, Central of Georgia, Atlantic Coast Line |
Chicago, IL–St. Petersburg, FL |
|
| Southwest Chief |
Amtrak |
Chicago, IL–Los Angeles, CA |
1984–present |
| Southwest Limited |
Amtrak |
Chicago, IL–Los Angeles, CA |
1974–1984 |
| Southwest Limited |
Milwaukee Road |
Chicago, IL/Milwaukee, WI–Kansas City, MO |
1903–1958 |
| Southwestern Limited |
New York Central |
New York, NY–St Louis, MO |
|
| Speed Merchant |
Boston and Maine |
Boston, MA–Portland, ME |
|
| Spirit of California |
Amtrak |
Sacramento, CA–Los Angeles, CA |
1981–1983 |
| Spirit of St. Louis |
Pennsylvania, later Amtrak |
New York, NY–St Louis, MO |
1927–1971 |
| Sportsman |
Chesapeake and Ohio Railway |
Detroit, MI–Grand Rapids, MI |
|
| Star |
Lehigh Valley Railroad |
New York, NY–Buffalo, NY |
|
| Star |
Missouri Pacific |
Fort Worth, TX–Galveston, TX |
1926–1936 |
| Starlight |
Southern Pacific |
Los Angeles, CA–San Francisco, CA |
|
| State House |
Amtrak |
Chicago, IL–St. Louis, MO |
|
| State of Maine Express |
New York, New Haven & Hartford and Boston & Maine |
New York, NY–Portland, ME |
1913–1960 |
| Statesman |
|
Boston, MA–Washington, DC |
|
| Steeler |
Pennsylvania |
Pittsburgh, PA–Cleveland, OH |
1948–1950 |
| Streamliner |
Spokane, Portland and Seattle Railway |
Spokane, WA–Portland, OR |
–1970 |
| Sundown |
|
New York, NY–Boston, MA |
|
| Sunflower |
Missouri Pacific |
St. Louis, MO–Wichita, KS |
1924– |
| Sun Tan Special |
Southern Pacific |
San Francisco, CA–Santa Cruz, CA |
|
| Sunbeam |
Texas and New Orleans |
Houston, TX–Dallas, TX |
1925–1955 |
| Sunland |
Richmond, Fredericksburg & Potomac and Seaboard Air Line |
Washington, DC–Miami and Tampa, FL |
1950s |
| Sunnyland |
Frisco and Southern |
Memphis, TN–Pensacola, FL/Atlanta, GA |
1953 |
| Sunrise Special |
Pennsylvania Railroad and Long Island Rail Road |
Pittsburgh, PA–Montauk, NY |
1922–1942 |
| Sunset Limited |
Southern Pacific, later Amtrak |
Los Angeles, CA–New Orleans, LA |
1894–present |
| Sunshine Special |
Missouri Pacific and Texas and Pacific |
St. Louis–San Antonio |
1915–1948 |
| Super Chief |
Santa Fe, later Amtrak |
Chicago, IL–Los Angeles, CA |
1936–1974 |
| Suwannee River Special |
Southern and Seaboard Air Line |
St. Petersburg, FL–Cincinnati, OH |
1920s |