CZ Roseville to Colfax route

[AmtrakPDX]

It looks as if there are two possible routes to get from Roseville to Colfax. Could someone help me identify which route the Amtrak uses?

TIA

Sam

 

[zephyr17]

It looks as if there are two possible routes to get from Roseville to Colfax. Could someone help me identify which route the Amtrak uses?TIA

Sam

Former Southern Pacific Donner Pass line the UP Roseville Sub, which is double tracked and the mains split and diverge in some sections. There isn't any other rail route there and never has been. Main 1 is westward and generally the southernmost track, and Main 2 is eastward.