One of my son's is a student at CU - like being sentenced to heaven for 4 years.
Enjoy - I went there a few weeks ago for some hiking.... getting a bit late for the mountains with snow on the way.
Denver security outbound is very difficult... suggest avoiding Uniteds security lines...and go down for AA or concourse A (doesn't matter which one you use - they all go to the train).
Take a walk along the river that runs through town
have breakfast at La Peps - it's great(spelled it wrong it's in the center where the Marriot hotel is)
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Askworldtraveler, EXP,4 million AA miles+++Hilton Gold (thanks to EXP)