We are staying in Evergreen inJune to attend a concert. Any advice on route to Red Rocks and return? Thank you
Google maps shows a few ways to get there https://goo.gl/maps/UwjrixVwjQVtfHJE8
Depending on where you are staying in Evergreen I'd probably avoid I-70. No reason to go that far out of your way. I'd check with your lodging to see what they recommend.
The shortest route is via a twisty mountain road so if you're okay with that, I'd take it (Hwy 74/Bear Creek Road).
Of course you'll want to be very cautious on your drive back late at night.