A lot of railfans use railcams to track Amtrak trains. Did you know that the Southwest Chief can be seen on 14 railcams?
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Auto Train (52, 53)) visible on Ashland, VA and Folkston, GA cams (Virtual Railfan), and Selma and Rocky Pt, NC (Railstream)
Cardinal (50,51) Visible at Cincinnati, OH (Cincinnati Railroad Club, Youtube)
City of New Orleans (58, 59) - Visible at Chicago (Mount Carmel cam), Railstream
Coast Starlight (11, 14) - Visible at Chehalis, WA
Crescent (19,20) - Visible at Thomasville, NC, Spartanburg, SC and Atlanta (Virtual Railfan)
Missouri River Runner - Visible on Sedalia, MO (Steel Highway cams), and makes turns on the Kansas City Jct cam (VR)