For comparison, here is Europe’s rail network with high speed rail (≥200kph) in color and other rail (<200kph) in gray:
https://commons.wikimedia.org/wiki/File:High_Speed_Railroad_...
https://commons.wikimedia.org/wiki/File:High_Speed_Railroad_...
https://www.aar.org/wp-content/uploads/2019/02/US-Freight-Ra...
Check https://www.openrailwaymap.org/ for a complete overview.