On two half days, I followed UP 4014 in Idaho and Wyoming.
Start out with a freight like I did! Or skip to Big Boy action at 07:12

0:00 A freight near McCammon
07:12 West of McCammon ID
11:17 Soda Spring ID
12:30 Montpelier ID
14:27 A freight in Monteplier
19:31 Near Montpelier
23:36 Pacing in Idaho
24:32 Pacing in Wyoming
28:58 Cokeville WY
31:10 Near Kemmerer WY
35:26 Near Diamondville WY