morphrider wrote:
How much easier is it to just go straight up to I-80?
Do you mean on I-25, north to Cheyenne, then west on I-80 to Laramie?
It's easy, for the most part. I-25 from Wellington to Cheyenne is a very gradual up hill, with it leveling off at the state line. Minor elevation change from ~5500 feet in Wellington to ~6100 feet in Cheyenne.
I-80 west from Cheyenne to Laramie is rolling terrain and an up hill that reaches it's high point at the Lincoln Monument rest area at the Sherman Hill Summit, exit 323. It tops out at ~8600 feet, then there's a drop from that point down to the Laramie Valley. Not overly steep/not overly long, just gear down for it.