These are free on the DLS:
<kuid:73500:100013> Baltimore to Cumberland Mega Route
<kuid2:73500:100796:1> Baltimore to Connellsville & West Mega Route
<kuid2:373500:100024:8> FDL Fond du Lac for T:ANE
<kuid2:549274:101522:3> Levi & Appalachian TANE
<kuid:429080:100126> DurangoToSilvertonTRS19_1895_1 (more of a tourist train, but great scenery!)
These are great payware routes:
<kuid2:122860:100436:27> Canadian Rocky Mountains - Golden, BC
<kuid2:122860:100316:55> Canadian Rocky Mountains - Columbia River Basin
<kuid2:122860:100494:19> Canadian Rocky Mountains - Rogers Pass (there are mor in this series)