Staying right on I-70 from Lakewood keeps you off the big passes (high up potential scary driving). You go through the tunnel UNDER Loveland Pass
Google Maps will tell you to take Loveland Pass into Keystone. Instead, continue on I-70 to Silverthorne and get off at Rt 6. If you are up for more scenery and a detour...continue past Silverthorne and get off in Dillon near the Walmart...then take Dillon Dam Road back around Dillon Lake/Reservoir and onto Rt 6 to Keystone. If not then --- be sure you get over to the Frisco area at lease once via Dillon Dam Road around the lake with the Rockies at the backdrop. It. Is. Gorgeous.
In some places on I-70 it is a steep grade (going up and down). I just keep in the right lane and go the speed limit. If there are big trucks I just stay aware of not being in front of them going downhill. Coming out of the tunnel it's all downhill.
July is stormy season (wicked storms) so keep an eye on things once in Denver. Last year I delayed going up to Keystone a few hours for storms to pass, but they ended up blowing up real big right over I-70 and I ended up driving in pouring rain which developed into riverlets on the highway. Slow going, but not scary.
Clear Creek Canyon *is* twisty, but canyon twisty...cliffs and hills all around you and lots of kayakers and rafters. It's one of my favorite drives! Another good one is to go up to the Red Rock Amphitheater and drive around.
I'm serious - check out street view in Google. It's how I decided to NOT do Loveland Pass :smileysilly:
HAVE FUN! I'm so excited to get up there now that I've written all that out!