“Casper is definitely on my list for an off day or two for anyone looking for suggestions. Good food, lots of bike shops, campground with cabins right in the middle of town, as well as plenty of hotels. There’s even a handfull of outdoor stores that stock things one would need to head off on a few days ride without real resupply options, which is a definite added bonus. It’s like Salt Lake City on the route in that regard, only smaller! Bonus points for renting a car and driving up to Devil’s Tower for the day one day. Definitely worth the drive (or as an addition to the whole route…hrmm).”
Comments by Angela Paterna: “I highly recommend a visit to the National Trails Museum in Casper, Wyoming. I addition to a display on the Pony Express, it also has displays on the Oregon Trail, California Trail, and The Mormon Pioneer Trail. They have a pretty good bookstore and free literature that details the auto route. I have stopped twice on different driving trips I have made between Colorado and Montana. And the view over Casper isn’t too shabby either.”
[N.B. These statements are all in the Comments section of the post]