You can get to the mountains by avoiding I-70. For example, if you look at a map around Golden, you can get on 58 and go to 6. This is somewhat good road and you can get to Genesee Park, Blackhawk and Central City.
You can go up Golden Canyon Road, just off 93, to Golden Canyon State Park. There is also White Ranch Open Space off of 93 (not full mountains, but foothills) for hiking. Going North you can go up 72, Coal Creek Canyon and get to Peak to Peak Highway.
Further North, Eldorado Canyon is very easy, has a interesting community, Eldorado Springs, and a great park, Eldorado Canyon State Park. This is a good canyon for the newcomers because it is a short ride from Denver and Boulder. No, climbing up steep grades, and you can watch mountain climbers practicing their skills.
Out of Boulder there is Boulder Canyon to Nederland--nice scenic easy drive.
What I am saying, there are other ways besides I-70. These ways were the accesses to the mountains before the highway was built. Yes, the roads are not a easy to go up in winter and certainly are slower. But if you are not in a hurry--then you can see better some of the small towns and communities, that are real Colorado.
There are many other canyon roads, from Denver. You can become familiar with them slowly but learn about them before you go---maps are deceiving. Do not make the mistake I made when I came here:
I wanted to go to Lookout Mountain, Buffalo Bill's Grave. I looked at the map and I saw Lookout Mountain Road from Golden that went to Lariat Loop Road. It sounded interesting and it must be the way to go.

Well, Lariat Loop Road has that name for a reason

--it scared me so much that I ...in my pants..

....When I got to the top of Lookout Mountain, I saw all these cars in the parking lot of the museum and then I learned there was another way to go,very easy, by I-70.
