Most of the run on UP's Provo Sub is chaseable from Price to Castella (just east of Spanish Fork)
on US route 6 and US route 191,But be careful of the heavy truck traffic on these routes.
There are plenty of safe places to pull off and get the shot,even at Solder Summit, where Utah RR
drops their manned Helper power.
In Price,there's a museum that covers that region's history with the RR's there.
Utah RR property is OFF LIMITS!!
This is part of Amtrak's CZ route and former DRGW's Mainline to Salt Lake City.
There's no known routine for the coal trains.
Utah RR loads coal off of UP's Castle Valley Ind track near Wellington as well.
The Land of Enchantment is not Flyover country!